Auto - Ship vs Buy

[Saltdiver]

Contemplating a job offer in Hawaii and trying to weigh our options. We have 2 cars, 1 of which we have thought about selling this year. If you have done, contemplated, or wish you had done differently, your input is appreciated! In the end, we would like 2 autos in HI.
Question -
(1) do we sell 1 auto on mainland, buy new and ship the the 2 autos (1 new, 1 old)
(2) do we buy 1 new on mainland, ship 3 autos (1 new, 2 old) and sell 1 old in Hawaii (maybe at higher cost - enough to cover shipping plus some)
(3) do we sell old here on mainland and just ship 1, buy our new auto in Hawaii (when you consider the cost to ship, are costs that much more there?)
(4) ???? Suggestions ????