yes, too much. Read around RC to get a better feel for current reccomendations. I would suggest for 4 hours of halides and 6 hours of PCs, for a week. Then increase 1 hour per week until you reach the desired levels.
This is very hard to do, because you want to enjoy the tank, but well worth the discipline. If you notice algae blooms, cut back on the lighting and do some manual trimming right away to keep things under control.
Matt is the only person I know that has a tank that has never really gone through an algae bloom. He blasts his lights too, so I can only attribute it to his massive flows.
David, how about your tank? You have massive flow too, did you guys have an algae bloom after the aquascaping? What was your photoperiod during that time?
Cheers,
Scott