So what do you think?

hello everyone,
I've been trolling around these parts for quite sometime and I'm finally ready to pop my cherry and get into growing. These are my plans. Please let me know if the tent size is too small, the area that I will be growing in is tight so space is limited.
2'7" x 2'7" x 5'3"(Approx. 32" x 32" x 63") grow tent
400 watt hps/mh cooltube?anyone have any experience with this?
I found this one.
http://cgi.ebay.com/400-Watt-Ballast-400W-Cooltube-Grow-Light-HPS-MH-/190497541956?pt=LH_DefaultDomain_2&hash=item2c5a89cf44
soil(foxfarm?)
scrog
1-2 plants
strain wil be either nl or white widow
not sure on nutes yet, will be researching
at least a 6" intake and exhaust fan.
Any tips will be appreciated. I'm a bit worried about the heat issues.

Sounds about right, NL is a good yielder, so is WW.
you can probably get away with a 4 inch exhaust inline fan with about 173 cfm with that size tent and that light.

I concur. No need for a 6" fan. That is a tiny fucking tent.

is your plan to use the same fan for the cool tube and room together? if you have the money why not get a separate fan for the cooltube and a fan controller with thermostat to help control the temps... this is the route I will be taking as and when I can afford it

That indeed is the best possible way to go. You have to automate your shit or you will be either chained to your grow room or get poor results.