You could always try Longbeach, California. You will get mainly good weather with only the odd day lost due to wx. the beauty of the place is that you can actually find any sort of conditions you want out there, including snow, to go and practice your flying in. Obviously as stated previously you will have to apply for a visa to undertake the JAA training in the US.
If you have had 40hours experience of crap weather, crosswinds and cancellations (BTW there are some interesting crosswinds and thermals to cope with at LGB as well but dont stop you flying), then I will say if you are hacked then get out there and do it. There could be a danger now where you get so disillusioned that you give up or just purely run out of money as constantly going over exercises due to delays in your training.
If you have any particular questions about the training out there then drop me an email and I will try and answer if I can. I am off out again in 3 wks but purely touring this time.
Have fun!
Julian.