Hi Jasper,
CAE OAA AMS is a wholly owned part of CAE just as OAA in the UK is. A large proportion of the integrated CPL course undertaken in Hoofddorp will be completed at the COAA facilities in Phoenix, AZ and Oxford UK and so in principal, you should not be at an advantage if you commenced training in the UK first. I'm curious that following selection, you are not informed of this as the two schools are part of the same organisation.
Before considering financing however, perhaps you should try to research how few OAA AMS graduates have managed to find employment in recent years, then consider your options.
Good Luck.