I Agree. And a used 2016 is going to depreciate way less than a new plaid. By the time you get tired of it maybe the yet to be released new roadsters will be reasonable used and you could get by with fewer seats.If you can find a good price on used P series, buy it, drive it until the Plaid comes out, wait until the dust clears and bugs are revised, then sell the P, and buy the Plaid. You should not suffer too much more depreciation if you shop well.
I assume the used P has AP2.0.