As far as the man door and 16 x 7 garage door it was just cheaper than buying new. You can adjust the garage framing to accept a larger man door or a small roll up door. i could have went with any door 6 x 9 or less on the side of the building. The garage door went up the same as it would a wood framed structure.mid south metal products in collierville, TN produced my building kit. The build wasnt hard but it took six months with winter rain, snow and people to help once in a while. Something I would have done differently if i had more money is id like 20 or 24 feet more depth. But to add on all you have to do is remove the back wall sheet metal and framing,order framing and sheetmetal to add length on then throw your endcap back on. I have more driveway behind the garage to do this when i get the funds. cost of the building to my home was 3800.00. Garage door, side door, stuff to run electrical and OSB for the inside Id say about 750.00. 4500.00 estimated in all. The instructions are easy to follow and its slip fit connections followed by screws. I never had a place to work out of the elements and even though its small it serves the purpose. Heres a link to the full construction of a versatube garage and to me it was as easy as it looks in the video. <a href="http://www.youtube.com/watch?v=pWYrYWRXjq0">Versatube part one</a>