I have my basic track plan ready. I don’t have a pic. of it but will some time today. Just so you guys know when you see it, it is not very elaborate because there is not much room. It has no “turn arounds” because of limited space. If i want to turn around i will simply stop the train, drive it around the track onto the roundhouse, turn the roundhouse to the appropriate spot, stop it, Drive the engine back onto the mainline, back it up to the rolling stock, hook it up and continue. I’m pretty excited to start. I want to add a second mainline (double mainline). But not sure if I will because of A, space and B, money for diffrent radius track. I don’t have the count of how much track will be needed but will soon have that count.
[#ditto] In your drawing the minimum radius appears to be way smaller than 18", and some of the turnouts look like #3s. You will only get frustrated if you try to squeeze that much track into a 4x5. I drew up your plan in Cadrail so you could see what it would look like if it were scaled correctly. All curves are 18" and the turnouts are Atlas Snap Switches. The turntable is also made by Atlas. The dotted line is a tunnel.