This is a bit ludicrous now. You claim to have enough cash to do an ATPL , you claim you want to be in the cockpit . However with this lifelong dream , bearing in mind you have only been a sentient being for about 15 ,that is only 17 years you have now elected to join the raf and sit in a dark room for 20 yrs
Look matey , if you truly have the money do it now , if that is what you want , and to be honest the evidence supporting that isnt exactly strong. If not get a job and save up or at least look at other options . CTC for example partial sponsorships etc etc .
But DO NOT !!!!!! commit to a long commision in the arse farce if that is not what you want to do , twenty years in the pitch black surrounded by sand is not condusive to happiness , unless you WANT to do it ! You want to be an airline pilot remember