Growing Critical Kush in a 4x4 Grow tent

Hey guys was just after some advice, I've just bought 8 seeds (x5 Critical Kush and x1 skunk cross northern lights and x2 kerala cross skunk (the kerala are non feminised)) and I'm going to grow them in a 4x4 grow tent under a 600w hps/mh with soil I've never grown before I have no idea what I'm doing really. I need around 20oz hopefully the grow needs to be stealthy and able to be packed up within 10 minutes, I was thinking 8 plants might be a bit too much and a scrog is definitely out of the question (I need to move the plants individually if need be). I've heard the amount of plants doesn't really affect yield and heard of a lb on an individual plant, I was thinking of going with just 2-4 plants as it would be a lot easier to manage than 8. Would 2-4 plants be ok or is it worth growing all the seeds at once?

Should I expect it to be far more potent than semi wet bud I get off the street? Any tips to increase potency of the grow??

Well, your not going to pull 20 zips off your first grow with only 2 plants man, your looking at a average of 1.5 to 4 per plant, but it also depends on how long your veg times for, and environmental conditions as well, nutrients, and how you take care of/grow your crop. I would worry about the resin production techniques after you have your plants in soil for a couple months man, then get on and do some research for the last bit of your grow. The best way for you to make some profit/high yields would be to Scrog out your tent. Im doing 9 plants, 1 gallon pots, in my 4x4 tent, and still have a foot of room around the walls of my tent. But, thats just my opinion! So do what ever works best for you.

do you have any pics of your set up ?

Yeah, this is my 4x4 and set up. They are still seedlings so I haven't set the screen up nor have i transplanted them to larger pots. I will keep you posted if you want once I get my set up done completely. It's going to be another week or so, but Im doing 3x3 squared of 1 gallon pots.
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cheers fellas I haven't bought the tent yet I just bought this ballast this other week (hope it's a good one?) http://www.hydro4u.com.au/files/64476/623.jpg

Say I need to stash the plants for around 5-6hrs because something happens, would this screw up the light cycle/quality of the grow? Would even a few hours of no light screw them up in some way?