Hi there thought I'd add my thought's
The grow tents on the link are fine for tiny grows, actually the medium sized one isn't bad at all, and the T5/fluresents will work fine too, the 90w LED UFO's do work!! admittedly they are better at vegging but if used in conjunction with CFL's or fluresents you can flower quite well...seeing that the tents are quite small the light will travel better (better coverage)
so your buds will still be of an ok size, I would say this though...despite the LED companies saying the UFO's and panels are good for thousands of hours use.....In my opinion they ARE NOT!! I had 2 ufo's and neither of them lasted me a whole grow from start to finish. But the good news is a 125w/150w or even a 250w ENVIROLITE/ENVIROGROW will fit in there just fine and the temp out put is simerlar to that of a UFO (125w/150w), thats been running for a few hours, a 250w runs a little warmer, but with a good in-line fan 4/5" (small,quiet fan) the temp's will not be a problem to you
Leds on the whole are pretty expensive the more pricey the better the quality so I'd advise'surgest 'The ENVIROLITE' option cos its a lot cheaper and the results are usually really good
admittedly not as good as MH/HPS but thats a whole different ball game with more often or not a huge price bump! to deal with heat etc...anyway I think since you said you are not all that confident with tools and DIY craftsmanship, that this is a good idea however I would shop around and see if you can get the setup/simerlar setup for cheaper, and think carefully about the size of the tent.. the bigger you can go the more is possible
I hope all goes well and if you want any help, idea's or surgestions I will be happy to help
happy growing - STELTHY