DS Texas,
Good work on the layout!
You have to decide a priority - train running or more accessories.
Do all of the accessories in the first two plans fit into the 7/19 version? This seems to be powered well and will operate well.
You can use the simulator feature SCARM to run a train(s) and try the layout. It requires that you make all of the track joints connect.
You only need a few custom cut lengths to make it all connect in SCARM, just like a real build.
Send your file to me if you want me to fit it. Then you can play with it in sim.