According to the last integrated forecast board, these were the available slots 4-WHMC(Wilford Hall/UTHSC; 3-WP(Wright Pat/WS; 2-DGMC(David Grant);4-Keesler, 10-Deferred. So it looks like chances are pretty good that you can get a deferral. However, considering you get paid more(plus the housing and substience allowance) and the fact the surgical residents are probably treated better in the military(from what I've heard), I'm not sure I'd want to get a deferrment in gen surg.
Jacob