Curtis,
As others have said, you should be just fine. I have kept upwards of a dozen anemones in a 40br that I used for propigation. They seem to do very well as long as they have a some rock to attach their foot to and good lighting. If you are planning on propigating them I definately suggest that you make sure you have some areas setup so that they can sort of hide. Alot of times they like to crawl under a rock or in between rocks to recover. My guess is they want to step out of the stronger lighting until they have a chance to heal. Some just seem to stay right out in the open and do fine but for others this is a good idea.
I kept mostly BTA of various colors and sizes in the 40br but did have a couple of others including a long tenticle and a couple of carpets though I never tried to propigate either of those.
I used to turn 1 bubble into 3 or 4 smaller bubbles without a problem. Just keep the water quality good, make clean cuts, give them time and a good environment to heal in, provide strong lighting and medium flow, and feed them if you want them growing quickly.
Garrett