additional pictures

I'd unfold that kit to make

I'd unfold that kit to make it much longer, using styrene sheet for the back walls that no one would ever see. 

A bakery in that small a footprint couldn't meet the threshhold for needing rail service otherwise.

Open it up, get three or four car spots, and make it a viable rail-served industry.

One these years, Walthers will realize that 4x8 HO model railroads went out of vogue decades ago, and hopefully they'll start offering kits that reflect walk-around, shelf-style layout practices.

Loading Dock

I would stay with a single door offset as you have shown.  If you are thinking a bakery or food processing company, then a single inbound car would be sufficient for the size.  In my view the finished product will be going out in trucks/highway trailers.  The location of the rail door will be driven by the interior layout, not the exterior esthetics.  Consider shifting the truck bays to the adjoining wall or the back wall opposite the rail dock. I do not think that you will need 4 to 6 truck bays.  Certainly two, possibly three.  

The unloading pipes would most likely go into the tall square structure to support the vertical tanks.  Consider pivoting the transfer building/silo complex (base #35) so that the transfer building is against the main structure.  This in turn may push the rail door to the centre panel and solve your concern on symmetry or even to the far panel.  You will want a person door at ground level near the pipes for access by the working party.  

I support caniac's observation on stretching the facility if you have room.  More length is good, if not consider extending the sides so that it goes all the way to the backdrop.  I look forward to seeing what you come up with.

Bob

Agreed, couldn't support a rail spur

However, you could also consider using the bakery kit as part of another grain based industry. Although called Continental Mills, it appears that it takes flour and other products and makes boxed baking goods (just a guess). You could downsize the building significantly and yet have call for covered hoppers and tank cars. Look at it and use Google street maps (and the timeline function for different views of same area).  https://www.google.com/maps/place/Continental+Mills+Inc/@47.4294985,-122.2355989,228m/data=!3m1!1e3!4m13!1m7!3m6!1s0x549008cc03bb6f23:0xcd42b24716babb9f!2sRenton,+WA!3b1!8m2!3d47.4796927!4d-122.2079218!3m4!1s0x54905cf71f8404cf:0x37efb02f4949466c!8m2!3d47.4299998!4d-122.2337728

Here is the basic railroad side view. Truck traffic also works the same space as the rail spur.

In your design, the storage bins don't have to be in a straight line.

I've been thinking of this one myself. 

Another angle...

While I would agree with the above posters that a spot that short for hoppers, boxes and tanks would not be realistic, I have seen a facility that size that gets rail service.  Since it appears you model a more modern scene (I do too), brick over or otherwise make that boxcar unloading door look disused, then go to town in converting that wall to hold pipes for liquid tank car unloading.  Make the pipe sizes larger--you can use the cleaned up sprues from the kit building process, and for pipes laying on the ground, I use a large diameter silver solder that I've had for years.  I believe that silver solder was what people that do stained glass use, and that's probably how I ended up with it.   i find the solder lays realistically and can be bent to shape following the contour of the layout ground features.  

In Bay City Michigan, the Huron Eastern Ry.  spots corn syrup tank cars at a facility not much larger than this (it only holds 2 cars) at the north end of their Wenona yard off of Wheeler Rd.

 So, I'm just saying you have options if you like the building footprint.  

Others have also said that you can make it larger, and that's for sure an idea to look at if you want to get more than one commodity , but I'm just letting you know there is a prototype for everything!  And no industry is too small for rail service, just ask a shortline! 

Years Back

My wife worked at a large commercial bakery (interstate Brands) that made breads and rolls all day long. They had a spur located across a 4 lane street to which was delivered the covered hoppers and tanks cars of raw material. This was piped under the street to the bakery. Therefore you could, with a large enough facility, have rail service that is not right next door.

Can't Support Rail Traffic?

Seriously?

So a model railroad now has to pass yet more tests before it is "approved" in properly reflecting the latest "movers and shakers" layouts in the hobby?

I marvel at what some model railroading circles have evolved to.

Andre

Nothing New

Discussions about rearranging kits into more realistically sized industries have been around the whole time I've been in the hobby, which is well over 40 years.  The OP was asking about making the customer more realistic, and is receiving appropriate advice given the questions posed.  

Rob...

Fair enough. The OP did ask for opinions, and yes, he's receiving the input he desired.

I guess it's the "Gnats n' Camels" thing again: What we gag at vs what we'll swallow. Each of us have a different "GnC" threshold depending on the subject.

I guess I typed my post account of some bad pizza heartburn, or my undies were too tight, or something.

Realism vs. Room

Has anyone asked if there is room to expand the structure?  These are all good ideas and I agree the structure runs small for a rail served bakery, but many of us do not have basement sized layouts and have to compromise. 

If space is limited, one thing you could do is model “part” of a larger complex.  For example, turn the building into a receiving/shipping building, (Examples: add addition loading doors, covered extension for airslide and tank cars, etc.), use background buildings or flats to represent the rest of the bakery facility.

Joe