I think that's fair, in my experience it became as natural as LHD after a week or two but I drive mine almost every weekend. I'd be more concerned about devaluing it or getting paint damage that some poor shop would have to try and blend.
When I bought mine it had a TX title and dealer tag already and all the import paperwork was surrendered to the Texas DMV, so it was as simple as giving the title to the Georgia DMV and filling out a form since chassis codes won't work for their VIN system. If I remember right, sales tax in CA has to be paid at the time of sale for a dealer-owned car to be delivered in CA, that plus the $8,500 CARB fee is a huge initial hit. GA charged me no sales tax.
Toprank seems to leave the CA reg thing to the buyer no matter the car, likely because if any out of state buyer came in, Toprank would have absorbed several thousand dollars of CARB-compliance cost for no reason, which I would think is required before CA registration. The hard part of getting the car out of JP and past US Customs has already been taken care of, so a buyer wouldn't really need to know much about HS-7, 7501 form, etc.
The Montana thing is getting some bad press recently, especially in GA where there have been difficulties for exotic car owners.
