Welcome Joe!
If you have space around your 24" x 72" table, consider turning it inside out.
I'm a big fan of around the room shelf type railroads. You can set the at any height, what ever is comfortable for you. You can either fasten them to the wall or setup on narrow free standing tables. Mine is 24" deep at most with most of the shelf at 12" or even less. You can go completely around the room if you want continuous running, just use bridges or lift out bridges for doorways.
This will free the entire center of the room. If the railroad is high enough most furniture will fit against the wall under the railroad. My current railroad is point to point, using turntables and wyes to turn steam engines. A lot of places for industry switching too.