Welcome again, see you were on 2 years ago briefly. Unless you are using the Emperior 280 for flow, you realy do not need a mechanical filter with your live rock. Unless you are going to change it out every day or two, it will become a nitrate factory. Spend the money on a rodi unit if you do not have one already. If you already do have a rodi unit, spend the extra money on the best skimmer you can afford. and remember TAKE YOUR TIME!!! If you are just putting in your LR, it will take 4-6 weeks before your cycle is complete and before you can start adding inhabitants. What you decide to keep will be greatly dependent upon your lighting. Also avoid all the snake oils out there, purple up ect. Do water changes weekly and that will be all you need for a start up in a small system. Good Luck