From my perspective, going USMC route has the good and bad sides. The good, getting the MOTS training, the bad, being outside of your future airframe. The Navy is going 60's and going to the USMC will only take you out of the running for a DH tour as it stands now. The MC training will be invaluable as far as CAS, and that is something that the Navy doesn't teach very well.
Dusty