You'll still have to go to Cranwell for their OASC selection. If you get in then it'll be initial officer training before you have any hope of getting onto any aircraft.
No guarantee you'll make it through and it'll be mandatory to sign up for the 12 years as usual.
The good thing is selection isn't the nightmare that people say it is. The tests are good fun, fitness test should pose no problems to you, group exercises are a great laugh as long as you have a good bunch of other applicants. You may have a bit of trouble explaining your situation in the interview but why not give it a go? If you're prepared to commit yourself and genuinely want to do it they'll give you a chance.
You might want to consider how volatile things are and the likelyhood of you going to war to start with....