Buy as many watts as you can afford
es300 be nice expensive tho
two sf1000 or equivalent would be ok but probably really need 3 or 4
having multiple lights is nice if
you grow different strains and they are different heights you
can adjust So they all get most light they can
I have a 2x4x5 tent also. I went with a 320W Kingbrite, but lots of journals and posts about their 240W working great in a 2x4 tent also. I got a 240W for my clone/early veg area and then they go into the tent with 320W:
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