Hi ivierre,
If you do a JAR PPL in US, then there is no licence conversion on your return home.
I would suggest that you let the prospective school know what training you have done to date, and take it from there.
As Vincent has mentioned, if you want to take some of the strain away from an intensive course, then get some of the ground work done first if you can.
Can a PPL be done in 21 days - yep! I too attended OBA (just over 10 years ago now) and yep - the going can be tough but it can be rewarding too. I'm going back there in Feb 06 and will do a BFR and hopefully get a rental for a couple of hours.
If there is anything else I can help you with, feel free to PM me.
PD
