Here is a link for you to start your research.

MarineOfficer.com

Everything you need to know can be found from reading through this information.
The Marine Corps Officer selection process is very INDEPENDENT.
You will NOT have your hand held and guided by the nose through the process.
I remmeber my OSO asking me - So why should I let you in my Corps?
This was not something I had heard from other *recruiters*
They will tell you what they need, when they need it, and who they need it from - - then it is up to you to get it.
If you aren't willing to do the legwork, then they figure that you don't have the gumption to get through OCS.
I definitely think that USMC helos would provide you with what you are looking for; but it is a long road.
best of luck in your search.

USMCFLYR