30kw is a bit extreme don't you think? EPA claims 20 average drive HP at highway speeds= 14.9kw. But even a 15kw genset would require a trailer. Sorta reminds me of the Tzero.
As for your options... I think the biggest considerations are your wife and children. If we figure a low level of mechanical sympathy from them, your "high cost" EV would probably have to be "very high cost" to offer the turn-key amenities expected. You would have to modify 10 blow dryers for heating alone.
I am in a similar conundrum, and am leaning towards PHEV conversion of a Toyota product (read as Lexus). All the benefits of Toyota engineering, but a bit of the fizz from the PHEV kit.