you only live once...
Get PRK - follow the doctors instructions pre/post surgery. There are no guarantees but personal experience has shown me that every college classmate / OTS classmate that applied for a pilot position after PRK got accepted. Some are flying F15s, some are flying C17s, a few in C5s.
Even if you don't get into UPT , what harm can serving 4 years as an officer in the armed forces do to your future?
V/r,
LA