dam thats good.to start of ur plants it will be fine.u only need to open the doors at night if pos or a bit in the morning,its pretysmal so after a while ur durban will outgrow it. it will only be good for a small period of time.if u buy an hps it will get hot so u will need a small fan.
am growing with 2,60w,1,100 w normal lights bulbs en a 60 liter aquarium light(cool with i fink)in a simala small place(en ther still going an thev been on12/12 fer 5 days now)