Have you actually gone through the RAF process yet?
Have you attempted to get a Class 1 medical? (Civilian).
If you haven't then you are telling yourself no before they have said yes.
A mate of mine in Oz was about to start his job as a flying instructor after going through the whole rigmarole of getting his CPL/IR and instructor rating. CASA rang him up and grounded him. Reason, migraines. Why they issued him with his class 1 in the first place is a mystery. He hadn't had one in 2 years but they didn't care. He was told you have to be migraine free for another 2 years and then they'd reconsider. He took a job with Qantas as an adult apprentice. 18 months into that, he has a motorbike crash and he then spends the next 2 months in the brain trauma ward. Licence? You've got to be kidding.
He gets his job back, recovers enough to get his drivers' lic back and I believe he's got his PPL back.
He's now accepted that he won't get his CPL back.
Life sucks at times but it's better than the alternative. If the above haven't said NO then continue. If they do say NO and won't budge then you'd better find something else to do before throwing a fortune down the drain.