http://m.ebay.com/itm/251338673063?nav=SEARCH&varId=550281125384 same thing just buy it now not auction. But all together it only produces 8000lmn while a 4ft² tent requires 12000 lmn my CFLs would cover that easy producing 12800 lmn. I would have to disagree with you, unless t5s are miracle fluorescents and cover more light than the website says. 4 t5s don't even come close to the CFLs I found. And for flwrn I'm gonna use the same kind of CFLs but its 2700k and produces 7000lmn per bulb
4 foot HO T5 bulbs produce 5000 lumens per bulb.
If your space was 36x36 you would need 27,000 lumens total for veg.
Same space would need 45,000 lumens total for veg.
Those two bulbs you are going to get will get you 12,800 lumens total. That is enough lumens for a 2x2 space. That is a pretty small grow space. Where do you plan to flower at? You won't be able to get by in a 2x2 space with 1 plant let alone more. I think veg will be tough with more than one. And putting that many lumens in a small space during flower will mean you will really need some good ventilation and exhaust.