IMO, you shouldn't keep carpets. They are one of the harder anemones to keep. If you want an easy, big, sand-bearing anemone choose some larger LTA. If you don't care if it is a sand-bearing anemones or not, choose a GBTA or RBTA (same thing, different color). I think you should be able to keep anemones, but carpets may not be the best choice. Do some research, and remember to take it slowly. Maybe add 1 LTA, and if it does well for a month add another, and continue until you have the number of LTA you want. I would suggest 4 at max, but 2-3 would be ideal. Good luck!