30"long 22"tAll tank. 1 or 2 165w led boxes?

I think im going to ve placing an order for 2 reef radiance 165w led fixtures but before i make the plunge on 2 of them, would 1 fixture at 100% 12" off water cover the full 30" with decent par? I have a crossbar on my tank so that kept me from buying a kessil a360w, do you think i should buy 2 boxes and keep them 6-12" off water at a lower intensity or get 1 box at 100%?

Figuring out a good lighting for a 30" tank is super frustrating to say the least.

Thanks peeps. PS, if theres a better option in the same price range let me know, im expecting to spend around 300, willing to go as high as 500.

Scott