Vito - BMP will almost always be too big to post. Save as JPEGs.
You have a couple of mis-aligned tracks - try running the train simulator - it will stop where there are disconnects. One is a result of mis-matched track heights. A second one I cannot tell. You also need to raise and lower the track where they cross. There is only 2 1/4 inch height difference. I think you are going to have the raise one track and lower the other to get enough clearance. That will give you an idea of the grades you can expect.
I prefer what you did with the new yard entry, keeping two long spurs, and still an entry and exit.
For your buildings - the new Menards theater and the barber shop look decent for under $100 fully lighted. WS also has new ones as well which are also nice.
