Help with a short sale purchase for primary residence

[Zac Boelkow]

Listing states: maintenance has been deferred for long time, needs a roof, and A/C. I would like to buy as my primary residence. Also I would require financing. My thought is to work with listing agent and see if I can get concessions (not sure if that works on short sales). Also I would like to replace roof and AC prior to closing. Not sure if that is allowed or not. My goal is to do the repairs and pay as I go, move in, then sell my primary that I currently live in and pay off the new place. Any advice and suggestions would be helpful and appreciated!