Shit one led driver failed, now i have just 100watt

I ordered a new one but it will take some time to be delivered to me. I hope this wont effect the grow too much.
Im pretty impressed by the leds so far tho, i think i will add a few more.
Edit:
I just ordered two cree cxa3070, this will give my grow 250watt in total, is this enough for my cabinet? Would it make sense to add even more lights?