I guess it depends on what you want career-wise...

Do you want to stay military, or be a pilot, or both?

If both, I'd take the helo deal. It's a bird in the hand and a military aviator career opportunity. Also long-term you might be able to get into army fixed-wing flying and qualify for a post-army airline job.

If your focus is to stay military and make the most money, you might want to compare the NI career track to the army rotor track for payscale, promotion opportunities, and high-year tenure gates.

If you want to be an airline pilot someday, then will want to either pursue an age waiver to get a fixed-wing military slot or plan on getting out and starting civilian flight training (or maybe train part-time while still on AD).

I think an age waiver for prior-service age 31 would be do-able, but it changes constantly with their needs...not sure where it is right now.

I suspect that getting a regular commission in combat arms after age 35 would be hard or impossible...I think they only let the doctors/lawyers/chaplains do that.