Just a small note. When
i bought my first motorhome in 2003 in Connecticut they had no temporary permits and either you brought your own plate or borrowed the selling owner's plate. You needed your own insurance. you had to have written permission from the plate owner to use it.
and don't cross Massachusetts. They don't recognize paper plates and since you are therefore driving an unregistered vehicle, you must not have insurance and your vehicle is seized and you go directly to jail.
So plan to drive around Mass and not through it!