Grow Room Suggestions for planning my next grow?

[Haunts]

Greetings all. I'll be starting my next grow in a couple of weeks and want try and get more out of it, so i wanna do a few tweeks and just get some other suggestions from you guys.
I managed to squeeze a 150hps in my cab the other week for the end of my current grow (i've not got a current journal) i was using 6 x 30w CFLs before and WOW what a difference the HPS has made.
I keep seeing air pots would these be worth getting a long with an air pump for oxygenating the water? Does it make much of a difference?
My cab size is 45cm(18in)x45cm(18in)x80cm(31in), and i've always grown 2 plants. Would i be better doing 1 plant in a bigger pot?

 

[namvet25]

Air pots work very well to establish a super root system therefor a more healthy and vigerous plant.Some of the best growers on our site use and recommend them.

 

[WGL]

My cab is similar in size and I have experimented with one and two plant set ups. It's a tough decision. I am presently doing two plants and I think it will come out the same as one plant in a bigger pot. The two plant deal makes it interesting but if I were trying to save money I would go with one plant. Seeds don't always come cheap, right?