The best advice I can give is do some research on things you wanted to have in your tank. Just because a pest shop owner tells you you can do or add something doesn’t make it right.
In the last few years I’ve meet a few new reefers and they see my tank and then ask me to come over and tell them what wrong with there system. I then have to tell them “hey me system is almost 4 years old, nothing is better for a system then maturity” “just because a bottle of bacteria you bought says it cycles your tank in a week or a month, doesn’t mean it’s healthy”.
The second piece of advice is when is time to upgrade don’t just upgrade by 10 or 20 gallons. It’s not much bigger and it’s just going to fill up in a few months. Look at upgrading by 100 gallons. Cause tiny tanks are harder to keep stable. Yea there cheaper to setup and maintain, but nothing beats volume of water. Parameters are easier to keep stable with more water volume.
Great start and keep the pics coming.