Looking to upgrade lights..

So now I'm nearing the end of 1st successful grow I'm wanting to get diff lights, I'm sure MH and HPS are the way to go but I'm interested in these t5s! What are you thoughts? I'm about to purchase one but b4 I do I wanna check make sure it'll cover enough and do the trick! Looking at 4ft 6bulbs 30,000lumens 54watt bulbs and 360 max watt. Remember I'm in a 2x4x5 tent it will fit is it enough light ill still have some cfls in for lower light and the sides! I do keep a window fan above lights now worried t5 might block fan circulation but could always get clamp fans!!

Is cost an issue? have you looked into the HPS or MH?
T5's sound like a good step up as you increase your growing knowledge, but tell us your reasoning for that choice.

With that space a 6bulb t5 would work great. Thats all i run now is t5's for both veg and flower. As long as the fan is circulating the air you should be ok.

T-5s is all I run in my grow room which is just a 5' wide wardrobe closet. No overheating problems, 1 4'-6tube fixture, decent light, good production per watt and it's much easier to micro-manage T-5 lighting.

Why wouldnt you use HPS if you have a tent? It would by far be the best choice for you. Only reason not to use one is space issues which you dont seem to have. If you want to start small then just get the 250w.

Im not a fan of T5s but also havnt looked into them for a few years.