I think I'm going to go with the Fugeray instead of the Ray 2. As long as I fertilize well and use good CO2 I should be able to grow even a carpet with the Fugeray. It will just take longer!
From personal experience with the Ray2 and not using CO2/Ferts. It certainly is high light and I had to elevate it above my tank and shorten the time I run it to 8 hours to counter algae outbreaks. =P