Hi sixfeetthree (that's tall!),
I know you've said that money won't come into it (I'm guessing you must have a very rich family) as the fees for you will be the same in the UK as they are in the US -- and you did mention earlier that your number 1 for not wanting to go to the US was the long 8/9 years to repay the fees. It will be just as much, if not more, in the UK or Ireland.
My initial advise to you would be to learn medicine in the place you'd like to practise. Having said that, I'd like to hear more about your story... what is the attraction of the UK/Ireland, do you know anyone here, ever visited etc etc