You'll be fine with your own simplified custom settings given the fact that your corals have lower lighting needs. While I like some of the "signature" series, I really find them too fiddly for my needs. I have a Prime over one of my Evos, and I find that most of the "signature" settings all have too much blue in the spectrum and illuminate the tank unnaturally (to my eyes), and have microvariations not required for softies and LPS. The lighting schedules are also pretty weird -- many of them start at noon, and then run late into the night, and that's not appropriate for my needs.