I`m believe pc`s can handle mushrooms ,button polyps,carnation corals,maybe some toadstools,sun coras are low light,and candy cane. I looked these up in one of my coral books and these were all low light corals.
i use 260 w also, and have a Flower pot, mushrooms, zoos, Crocea clam, 2 leathers, montipora, sponge, carnations, Frogspawn, Colt coral, fox coral, and star polyps.
you can get alot of diffrent colored corals with PC lighting, you just have to reserch the corals your going to buy befor you do, and do not belive what people at a LFS will tell you, they will tell you your lighting will grow anything
For greens you can go with hammer, torch, or frogspawn.
Reds and Blues can be achieved with shrooms.
Zoo's can get you some oranges, reds, greens.
Yellow Polyps are easy and grow quickly.