If yoru going to use t5's to flower you should really consider scrog. Ive done two runs so far with my 8 bulb 4 ft t5 light and the screen is giving me ALOT more bud.
Awesome first grow man, THIS STRAIN IS VERY SENSITIVE, I have never grown anything as picky as SLH. Your lights will be fine for this grow there was just a thread posted comparing HID vs CFL's and the CFL's did VERY well. Good luck and don't make any hasty decisions.