I don't think ocellaris or percula clowns regularly host carpet anemones. Don't think you have enough lighting for a carpet either. They need MH. You can try a bubble-tip anemone or a rose bubble-tip. A lot of clowns will host those, inclluding Nemo, they don't crawl around as much as carpets, and they don't require as much lighting. Doesn't really matter which order you introduce them in.