Welcome to the family
just like you, Im still inexperience and would still consider myself a beginner to this hobby even though I just started few months ago. Sometimes it feels so overwhelming to grasp the infos all at once but this site will definitely guide you along the way
Before you do or buy anything that you are unsure of, ask questions. There's a lot of research thats needs to be done.
If you are doing a sump do tons of research about it. You have a nice stand that will allow you to have maybe 20 gal
in there. It's important to have a spacious sump so you can put your heater, return pump, skimmer, make a portion of it as a refugium and other stuff that you may possibly need in the future.