CFL T5 or 150 HPS (STINKY ATTIC HELP PLEASE!!!)

Ok so I have 2- 24inch t-5 lamps. all together its 4 bulbs. I have the blooming bulbs that i ordered extra that they claim will be better then the normal grow lights. my question is, would it be better if i flower using a 150 watt hps instead of the t-5? (i can air cool the fixture to keep the temp down) i dont want to have a crappy harvest. I grow in a home box xs that is 4 feet tall by 2 feet wide. please help.

My Lamps were boughten at High Tech Garden Supply the 150 watt lamp im thinking of buying is the FloraLux 150 HPS

A HPS will always outperform equivalent watts of flouros given that you can control your temps. Those T5s are awesome for young plants though. With both flouros and a smaller HID type light, you will want to concentrate on a nice flat canopy so that the maximum amount of leaf surface area on each plant is exposed to the light. LST and SCROG style are excellent choices for low watt grows.