I had/have that same tank only in the 3.5 gallon version. (it's about $20.00 more)
GloFish 3.5 Gallon Aquarium Kit at PETCO
It's a cool little desktop tank, and the one that got me roped into the multiple tank syndrome thing lol.
I also started it with glowfish...Unfortunately, I lost them all to new tank syndrome. I did'nt know about cycling or anything at that time. They seemed to be tough little suckers to me because they hung on much longer than I would expect knowing what I know now and saw what I saw along the way after...
As far as the kit goes, pretty good bang for the buck, not a bad light, filter seems decent, the acrylic is thin though, I cracked mine eventually on the back side just by pushing the suction cups back on for the filter, so if you end up with one of these, brace the back real well before you push on the filter at all.
For a desk top tank, I since switched to the Fluval edge, I think I caught it on sale for around $105.00 and what a huge difference. Filter quality and being glass was a major step up. I don't know your space restrictions, but like the others said, no matter which way you go, you want bigger than the 2 gallon. I quickly outgrew the 6 gallon edge too, so I now I have 3 tanks going lol. I would get the biggest one you can afford space and money wise.