Ascot,
Provided you serve until your 30th birthday, you should be good for the resettlement grant. Under AFPS 75 you require 9 years reckonable service to get it, which you would have started accruing from your 21st birthday.
Use
Armed Forces Pension and Annual Allowance Calculator (AFPAAC) (the mod pension calculator) to run the figures.
Good luck getting out on legal grounds. The RAF has had a field day with this recently with people trying to escape to UK SAR.
See you on the outside!
SKDriver