I went with (40) x cxb3590 at 1050ma because it fits nicely with HLG320h-c1050b (x5). i have a 4ft x10ft space , so thats 2ft longer than yours and its plenty of light! if your budget can handle it, I think its a great way to go.
Do u ever find it difficult to distinguish the difference between light bleaching vs deficiency...lol..
i find it a lil more tedious in interpreting the 2 sometimes..As many times i spoke with u i never asked u why do u prefer the 700 and/or 1050 vs 1400 pushing ur Cobs..figured to ask the horse himself then assume shit...and when u puttingout new vid bro,,so funny cuz im running 2 plants with new millenium..and the rest Canna base and other shit...damn tht just went off topic..let me hit my bowl and chill..Much peace and love,,,DGC,, stay green