I agree with Hyd3 here.
If you really want to fly you shouldn't accept TO or Flt Ops. Maybe the Navy is the best way for you to go to stay in the air.
The last thing you want is to think "what if?" ten years down the line.
You don't have to withdraw your OASC application, simply walk down to the Forces Careers Office and speak to someone in dark blue about going to sit AIB as well.
Good luck
TF