Well, I don't mind the hatches and crawling under the table. - you should see some of the spaced at the NJ Hi Railers. No offense to small people but some places are near impossible - I would place a few hatches if needed.
Second, I don't think I can do much wider as their are points in the basement than need to be accessible and a 2 ft walk around is probably the best. Dave, the bridge does not have to be in that spot. When I designed the layout I want to include it because I have 3 single 24 in bridges and 1 36 inch double main bridge. So it we need to move the bridges I am fine with that.
As far as the layout design, I have been fooling around with a new design - pen and paper - because I just screwed up - did not save the file - thought I did an poof - gone. So you will see a had drawn layout shortly.
I just printed the blank pages with the measurements and will draw what I think might be a little better. Dave and Seacoast - Not sure I have the room for and Island type of build for my TT like Norm did. Second. I think the max height - 2nd level will be somewhere around the 40 ~ 46 inch side. Not sure, I plan to talk to the Mainne Bench folks at York to capture some table in formation.
Thanks for all the great comments and for helping me out.
