If all you want to keep are softies and mushrooms, you'll do just fine with the power compacts. You may struggle with LPS or you may not, tough to say. Zoos should do fine under PCs even at that depth. Most people reccomend going with a double bulbed fixture one daylight 10-14k and one actinic 20k bulb. Thats what I use at least A photo period of around 10 hours is what most people adopt staggering the lights if possible like you do. I'd turn actinics on first and shut them off second if you have dual bulb control (i sadly do not)