I feel compelled to reply, I rarely do. My executive summary would be this: "Choose to do what you will enjoy doing - if that's not teaching and flying - dont FAIP."
I was a FAIP - it was my #1 choice out of pilot training. I would not change a second of it. Here is my FAIP experience - I think it worked out.

T-37 IP: 1300 hours
T-6 IP: 350 hours
T-38 IP: 600 hours
U-2 (IP duty was in a Camaro or GTO): 750 hours

So, I left AD last fall after 9 years and as an O-3 (Maj select) with 3,000 hours - all as PIC and about 70% Instructor. I also got paid about 107K to leave. Timing was, truly, everything.

Oddly enough, I had never planned to leave early, or fly for the airlines. I just did what I knew I would enjoy, and would therefore do well. I absolutely loved to teach and fly. So, I chose to FAIP and I went to work smiling everyday. When it came assignment time, I chose to fly the U-2 because those dudes fly their butts off in two completely different airplanes, and all over the world. Again, I went to work with a smile on my face (maybe not the time I had to take a sh** while in the spacesuit and with 9 hours to go until landing, but, most of the time I was smiling.) The decision to get out was the most difficult of my life - but, I was enjoying my time off more (ie, airlines) and knew that the flying and teaching thing was what I really enjoyed the most (ie, the reserves.) I am starting a Navy T-45 flying gig here in the next month or so and plan to keep smiling there when not flying for Delta.

My point to all of this is: there are no guaruntees, few things will stay the same. Choose now to do what you will enjoy doing - you will do well, and the rest will fall into place.

Or, I could be furloughed next summer and flie chapter 13 trying to make ends meet as a part-timer for the Navy.............. in that case, disregard everything.