I did the same thing (except with lighting from ahsupply.com). I had serious problems with the amount of light, but I think if my first inhabitants had been algae eaters it wouldn't have been a big deal. It was mostly hair algae in the 10 (I eventually put the lights on a 20, instead, it didn't help much), and there are plenty of fish that'll eat that. Anyway, you can always aluminum-foil one of the bulbs until the tank has adjusted to the other, start out with Hygro and Anacharis and those wonderful fast-growing stem plants, and with that much light, definitely CO2 and daily ferts. IMO. Could be fun though, and all the really incredible 10 gallon tanks in the AGA aquascaping contest have that much light or more.
125 Goldfish tank planted like a pond
44 Unintentional community of "gifts"
30 Planted juvenile betta tank
5 Heavily planted White Cloud tank