Would i be stunting my bud growth by sticking with cfls?
That depends on how many CFLs you have and their wattage... CFLs are more efficient but don't put out as many lumens. An HPS will give you denser buds and a bigger yield (again depending on the wattage and area to be covered).

A 250-watt HPS covers about 2'x2'. Here's the cheapest ballast/light that I currently use: http://www.1000bulbs.com/product.php?product=32621 and http://www.1000bulbs.com/product.php?product=25.

First grow I yielded 2 ounces from 5 plants (3 were autoflowering and were rather small). I hope to yield at least twice that after correcting for mistakes!
Good luck! :jointsmile: