No doubt lighting will be on the high side but no reason to back off. you can use any old light for fish only and save up for a fixture or wait for a good used one to pop up.
Another 72" option which has 8 bulbs...
http://www.marinedepot.com/AquaticL...xtures-AquaticLife-AK01035-FILTFIT54U-vi.html
You could also do a 60" if you can suspend it up off the water. This would be a great light. Note that no bulbs come with this...
http://www.reefgeek.com/lighting/T5..._4x80W_SunPower_T5_High-Output_Fixture_by_ATI
Other option is to build a canopy and use some T5 retrofit kits or looking into a halide setup.
Another 72" option which has 8 bulbs...
http://www.marinedepot.com/AquaticL...xtures-AquaticLife-AK01035-FILTFIT54U-vi.html
You could also do a 60" if you can suspend it up off the water. This would be a great light. Note that no bulbs come with this...
http://www.reefgeek.com/lighting/T5..._4x80W_SunPower_T5_High-Output_Fixture_by_ATI
Other option is to build a canopy and use some T5 retrofit kits or looking into a halide setup.