Just keep in mind that plenty of people have fishless systems with inverts and corals (including me atm) and the tank is doing well...granted my tank is well established so some of the corals i have wouldn't thrive in a new setup most likely but if i were you I'd definitely add a few soft corals at least...it only gets more exciting as you learn and see your tank slowly start maturing and supporting life! I'd introduce the CUC, add some zoa's/other softies, and ghost feed while watching your nutrients. Just getting in the habit of keeping an eye on nutrients will help you greatly as well as just getting your tank started. At this point if they're soft corals, phosphates and nitrates from the ghost feeding would be the primary tests to run since soft corals don't require Alk, calcium, mag to grow and would be a great way to get you more involved in the upkeep that'll be required later...not to mention having something beautiful to look at and enjoy!