I wouldn't recommend being a FAIP. I was an IP in a MWS by the time a FAIP graduating at the same time showed up at the squadron as a co-pilot. It's hard to ever catch up. You might catch up by the time you're a major, maybe not. Some guys catch on to an ops unit, others never shake the UPT mindset. In my experience, one FAIP was awesome, two never went anywhere in my particular little corner of the AF. In addition, I vividly remember the MWS guys in my Tweet flight ridiculing the FAIPs as snot-nosed LTs who could barely find their way home from the area much less actually teach anyone to fly. Looking back on it as an IP/EP/WIC guy, I think they were right. That wasn't official policy, of course, but that's what they said at the bar. FWIW. Good luck.

P.S. You say you want to do your 10 and get out, but you can't predict the future. The commercial aviation industry is in a nose dive with no end in sight. Also, it's not so easy these days to walk off the street into a guard/reserve unit. As competition increases, more and more units resort to the "bro" network, which can be a tough network to break into, especially if your credentials aren't tight.