You will have to decide whether you want a deep sand bed where you dont disturb it and life will grow in it. Or no sand bed / bare bottom (easy cleaning). Or thin sand bed - looks better than bare bottom and purely for looks without the effects of life in the bed. I like bare bottom or thin layer of sand best.
For filtration, you can have live/base rocks for biological. Then you can do water changes or get a simple hob
filter for mechanical filtration. Then you can decide for chemical filtration if yiu want them - carbon, gfo
, etc. Those media can be set in the hob
filter for better effects. Look on reefing seller website to see what is available in the market and research the pro/con/altrrnative before making a decision to buy.
An auto top off system will also benefit you. Stability is a key factor that will help coral growth.
I can show you a pic of my old system later today. The rim of the tank was cluttered and it did not look nice after adding all these equipment. Maybe you will change your mind like I did about using a sump or not.