Semper I, eh?
Look, if you don't want a flight contract, let them know now. If you hang on to it throughout TBS and then drop it at the end, or DOR during API or Primary, you're 1) kinda hosing people who actually wanted a contract, yet couldn't get an available slot and 2) costing the Corps a lot of money sending you around for something you have no intention of finishing. There's plenty of chances to get combat arms at TBS, as there are usually a number of slots for them. The MOSs available for fallen angels are usually non-CA one's, and are still based on your TBS performance and what's available that week. If you want to be a ground guy, go the way that the other 99% of the ground guys went....
I dunno, this topic just kind of rubs me the wrong way.
/blah