ok, if you can afford it hps is the way to go or even better these light systems are the shit. alot of the old farts at og got there lights here.
http://www.northernlightsgrowroom.co...tispectrum.htm
apparently they are updating there website but they have systems with hps and mh in the same aircooled hood! that is the best you can use indoors imo.

if you want a hps for rather cheap you can get a securty light like this and rewire it. i did this before for the left side of my tvstand stealth cab when i had it. in fact this is the exact one i had.
http://www.lowes.com/lowes/lkn?actio...50H&lpage=none

or you could just get a shitload of 42watt cfl's. they are not to be scoffed at for flowering. they don't compare to hps but check out these old pics of my 350watt cfl grow.

good luck whatever you decide!