Typically, a railroad uses

Typically, a railroad uses the minimum amount of track to get the job done.What I'm seeing is multiple routes going to the same place, routes splitting and running parallel for no appearant reason. 

I'd suggest you "save as" and try to eliminate as much track as you can while still servicing your industries--just as an experiment. 

Also, why not jus design the track using flex. Your trackwork will be so much smoother in the drawing. 

Now, you have S turns all over the place. Just because the track software lets you do it (especially with sectional track,) doesn't mean your trains won't derail in those spots. Hopefully, switching to designing with flex will help you smooth a lot of that out. 

SIMPLE IS BEST

I agree with Spacemouse.  Simple is best.  A higher proportion of scenery to track will make your layout more visually interesting.  In addition, I have found in planning my layout that fewer spurts, each with a justified purpose, also makes for a more interesting effect.  You may find it is easier to operate, with more oprational options if you have a simpler yard area.

A number of years ago Mike

A number of years ago Mike Danneman had a very lovely small N-scale layout desgned for watching trains run that was a huge inspiration on me at the time.  I found a link to it here:  http://nscaleaddiction.blogspot.com/2011/11/inspiration-from-mike-danneman.html

having trouble finding a track plan but it was brilliant.

Engines

GP50's were purchased for high speed operation, being high horsepower, 4 axle engines.  When the MP bought GP50's in the early 1980's, I was Asst Trainmaster at a switching yard north of Houston, TX.  OpCon in the St Louis headquarters called me one night and told me the piggyback train, CHZ, coming through that night, would have GP50's on it and if I valued my  career, my life, my children's lives and their children's lives I would not steal any of those engines for use in my yard, they were to be kept in intermodal trains and only intermodal trains.  They went through untouched by human hand.

If I had a choice of a GP50 or an RS3, I would put the RS3 in the yard and the GP50 out on the road.  Starting around the early 2000's the high horsepower GP's got cascaded to yard engines because the intermodal trains got too long and heavy and the modern SD's got enough HP/axle to do what the GP's did on intermodal, plus the schedules became longer and the GP's didn't have the fuel tanks for the long runs.

Your layout plan will work for your goals, you will be able to keep 1 train running on the outer loop and 1 train in the yard switching.  You really don't have a double track main, what you have is a folded figure 8, so can't just put two trains out there and let them run unattended.  Every lap, every train will have to be switched to the other main at the double crossover or you just operate it as one big loop and have one train chase the other and adjust the speeds so they don't catch each other.  I am not familiar with Kato track so you might be able to to line the crossovers for both crossovers at the same time and use it like a crossing, in which case if you were running 2 trains at once you would just have to make sure one didn't T-bone the other at the crossing.

March 1996 Model Railroader

double post.

March 1996 Model Railroader

Went through my old magazines last night and found the article for the 5x7 layout from Mike Danneman. It's from the March 1996 Model Railroader.  He also did a few more articles from them around that time. It's worth checking out if you are wanting to do a small N scale layout with plenty of mainline operation.  https://kalmbachhobbystore.com/product/mrr960301