I have run a shop for the last 11 years( http://www.cfsautoandtire.com/ ) and initially put in a symmetric 2 post and this makes it difficult to get in and out the doors. I highly recommend getting an Asymmectric Lift no matter the extra cost. I used Eagle Lift and had no problems with either...
Definitely No windows. When I had windows, I ended up Blocking them to keep unwanted eyes from looking in to see what they could steal. And they let heat out. You'd be better off putting in a insulated side window with blinds in my opinion. Depends on how much Automotive equipment your gonna...
FreeAutoMechanic.com will look up and send you wiring diagrams in an email that can be printed or saved. It might take a day or two to get them but it is absolutely free. You just fill out the submission form and thats it.
http://www.freeautomechanic.com/wiringdiagrams.html