The plant list opens up. However, you will have to start looking at pressurized co2, and good ferts in order to avoid an algae bloom. With high lighting like that expect to see cyanobacteria (slime algae), brush, and beard algaes.
with your lighting system you are getting about 2.3 watts per gallon which isnt bad there are some plants the will and wont thrive in the lighting for the best advice try aquaticplantcentral.com there is alot of good info