Richard - that's a great story and I wish I could have seen that Blackbird fly into Hawaii airspace!
From the price standpoint, I would go with Kauai or the Big Island (Hawaii) as being more compatible with your desire for larger lots and a bigger house. Plus, the Big Island is bigger than the other islands (duh, hence the name) so would give you more of a chance to exercise that S2000 of yours. Only problem is that both (Kauai in particular) may be a little too rural for your tastes. Maui would be better from that standpoint but real estate on Maui is crazy price-wise. Oahu is getting much too crowded with lots of traffic and unless you really require a city atmosphere, I wouldn't recommend moving here (even though I live here) :) .
Masaki