I would definitely recommend that you attempt to get some last-minute recommendations if possible.
I think you should definitely give formal recruitment your all, but in case things were not to work out for whatever reason, there is also a new chapter of Pi Beta Phi colonizing at Mississippi State this year. They will be conducting their colonization process after formal recruitment has ended. Here is some info about that.
http://www.pibetaphi.org/pibetaphi/msstate/