RPA is a hot commodity these days. Probably a good place to finish out. Yes, you're saying bye bye to military manned flying by doing that. If you've had your fill of mil flying, go for it if the location is not a problem.

Do the math on your time in grade and other particulars, make sure you're not going to time out rank wise before reaching 20 years of AD service. That could still lead you to being separated from the AGR program before reaching 20 years of AD. This is most often the case with O-4 passed over types.

You need to figure out what you want to do in the next 10 years. If getting that AD check and doing something else vocationally is palatable to you, the RPA route offers a good income even post-retirement. If you're gonna hate life because you're not in the air, then I would continue to fly manned in the Guard/Reserve and stay uncommitted in order to be able to apply and get a class date in the next 3 years as the hiring ramps up. You don't want to commit to a 4 year tour just to have the airline hiring ramp up and miss your window. If I were a betting man, CY15-18 will be the bulk of hiring at the airlines.

Good luck.