Hi,
I'm in the same position as you and I am looking to do the same as you a go for a Ryan or GECAT at the end of my course however I will not be going through Stapleford.
From what I understand if you go with say GECAT for Easyjet, then HSBC is prepared to help out with a top up loan which will pay for the full amount. Now the question I'm not so confident on is whether you'll have to have some security for this ie parents backing you. But the type rating is the most likely place the banks will be at the nicest as at this point they've got more of a guarantee ofyou having a job at the end. In saying that you'll have to have a job offer. You'd find it very difficult if you were trying this with the Astraeus course which has no job offer at the end.
hope this helps,