Yeah...if you're time constrained...
I made a bank of 12 for my 125g, bank of 6 55g, 2 banks of 3 for a 30BR and 40BR, mounted them inside the canopy.
Also LED's are not like regular bulbs where they get wet it can crack because of the heat. LED's run a lot cooler, the only thing that needs to be water proofed are the connections, a lil silicone will go a long way.