Its more likely that you will be taught bad habits in Arizona.
If you are in a good school in the UK with a good instructor continue. The thing is the first exercise 1-13 are the foundations of your career. If you haven't grasped them properly or they have been rushed you see the effects much later on.
You can even have folk that get right the way through to a base check on a multi crew type then fail because there are holes in there basic flying skills ie they can't fly in a straight line in trim down an approach. They were ok doing it at 85knts do it at 140knts plus and it all unravels.