http://q-yachts.com/ is also worth checking - not a hydrofoil but a beautiful (though expensive) electric boat
17 knot min foiling speed sounds quite fast, especially for water skiing in any sort of surf, but the Candela looks fantastic for getting around the lakes / bays on shorter hauls.
Just because you can buy a boat, that doesn't mean you can afford a boat.
Obviously it depends on what you're going to use the boat for, but for me personally it's all recreational. Boating makes me happy, and as much as I'll cuss and swear every time I have to do maintenance and upkeep I still think it's worth it.
I'm sure you know the old adage of the two happiest days in a boat owner's life: the day you buy the boat, and the day you sell the boat. Still, we never learn. :o)