I looked into a couple yrs ago of plating and keeping a bike in Oregon, they had at the time an OK for out of state people to plate a bike, something about for part time residents. AZ probably has a similar gig, you will likely need some sort of US address, mailbox R-Us works
oregon has mandatory insurance for MC's, Washington state doesnt. but wow is it a lot cheaper then you'se are paying.

ya pay in other areas though...