Yep I would skip the anemone also. Theres no need to get frustrated over worrying about the lighting. Power compacts may be somewhat okay for keeping anemones but VHO
and metal halide are usually preferred.
For a filter I would suggest a canister if your really not sure of your filter you have now.
Unless you can get live sand from an lfs
's tank than skip it and get the dry type. The stuff in the bag is almost useless and for all you know it could of been in that bag for a year and most of the bacteria could of died.
Live rock can be avoided right now but I really suggest getting some later on. It GREATLY improves your water quality and stability. You also may get some interesting little critters on it.