I looked at the specs on the Yearld Pro 660W its a bit on the pricey side, and whats up with 6" 12" and 18" WOW thats close to the girls! Kinda says its not very powerful to me, and may not have good penetration into the plants.
You may want to look at the Spider Farmer and Mars Hydro LEDs (others as well), I went with the MH TSL 2000s at 328 watts each.
Look around a lot, but one time.
Also the MH came with the master controller and is daisy chainable right out of the box.