One slight variation......I was told a few weeks ago that the requirements for WIC had changed from 9 years to 8 years commissioned time (I can't find anything here at home to verify that either way). If so, it's going to make going to WIC as a FAIP pretty much in possible.
12 months UPT
4 months PIT
36 months FAIP tour
2 months IFF
8 months RTU
That's going to put you at 5 years, 2 months already...add in casual and PCS time and you're looking at at least 6 years in service already (when I start my ops tour I'll be at 6 years, 5 months). To get MR, 2/4 FLUG, IPUG, and selected for WIC in 1.5 - 2 years.....good luck with that.
Other than that, being a FAIP is a good deal. I'd do it again (sts) in a heartbeat....and I did not choose to be one.