I think you will be very happy. I have a bunch of them at 50w and they are absolutely insane bright.  The meanwell hlg-185h-1400 is only 1 volt short of running them. That would safely get you 3 cobs but 4 might be pushing it and I haven't seen anyone try it. So the 1050 is the best bet and most efficient way to run these anyways.
	
		
			
		
		
	
				
			
	