I finally have enough money to get the hid lighting I want....I've been running t5s for several harvest now...but my question is I have a 4x2x6 ft tent...I run 3-4 plants....will a 400w be sufficientlighting to cover 4 plants? Because where I live having to much wattage scares me a bit, we have legalization on our ballot this year (if it passes I could careless, I'll prolly get 1000w, and build a room but I have to wait till Nov to see that!) Or would I have to get a 600w for 3-4 plants?