if your area is 3 x 4 feet, try using two 95 watt CFL (each provides about 450 watts of lighting!...the advantage of CFL's) mounted on each end will work. If your area is 36 inched one center mounted with reflector will work best. check out
www.envirolites.com for particulars....
the big advantage of this solution is NO heat, lumens are 3500(min) to 15000(max) and much less power use...