Space Constrained Grow, Possible SCROG?

Hey guys im trying to do a stealthy space limited grow sort of take the "plain sight approach" and put it in furniture in my bedroom as some sort of cabinet or other ruse. I won't have much height, only 3.5', am I going to be able to grow anything decent in there with possibly a scrog grow? I'm thinking of growing ak47 and price for the whole thing will have to be less then 1200$ Floor square footage is going to be something like 2' x 2' or 2 x 3' possibly 3 x 3. Would i be able to run a 400 HPS bulb in something like that ? If I set up a cab with excellent airflow (cooltubes on bulbs), possibly even stuffed an ac unit in aswell if i needed. Or would i need to opt for a 250? I'm definately a stickler for good buds!

I'm an Mechanical Engineering student currently so im pretty much down with any sort of challenges within the budget, however it is my first grow, any Recommendations?

Also does anyone know the what the situation is in Canada with the # of plants and sentencing? Are there any sort of guidelines for personal use? I don't want it to come across like im growing for profit or anything (lookin to yield a couple lbs' a year).

Thanks