Personal Opinion ONLY expressed in the following
Purely based on climate - If I were importing a bike from europe my priorities would be
I've seen too many UK restoration threads. Their winter roads eat metal of all kinds. Things from brake calipers to the inside of the rims, nuts, bolts, electrical connections etc. All these thing should be looked at.
I'f I'm buying a bike that I have to tear all the way down first and then put back together again $10K is about '$6K too much even for an AT.
Suspect reg. would be another headache. Donna Leak can quickly get your AT legally tagged (even in California) for a very reasonable fee.