Yes i am going to get a 10G with a 10G sump. I will get 5KG if 10 is to much. Yes i will probs get a few non demandidng corals. My angels just had eggs so i will have to put the nano of for a while. But still reply as i can still plan.
Thanks
Sean
PS the tank is 24x12x12
I'm pretty sure a 24x12x12 is a 15g and a great size to start off with
If you have a refugium in the sump then go ahead and add some LR rubble in there, As Ski said theres no such thing as too much liverock so try and cram some extra KG's in the sump and then get a good balance of swimming space/aquascaping in the tank