Take your time, nothing in saltwater happens fast ;)
Most mistakes happen to new people who try to change too much too fast.
Research, get an idea, sleep on it a bit, then save up and research more, then finally go implement said idea =P
Best advise I have for you bud :)
Your corals look healthy, glad your thinking about a sump :) Growing some Macro Algae in your sump is a very good way to balance your little "ecosystem". I like to reference it to plants and animals in air how we need plants to keep our air balanced out giving us Oxygen ;)