Glad to hear you are getting a larger tank for your fish sake, your probably going to increase your LR
also, each time you change something in your tanks filtration, bioload, and chemistry do water test and that will tell you how your tank is responding to the changes. Advice is good, but there are so many variables that only you will see them each day. If you run into something that is so far out of touch with what you know, post it and give us a shot at it. Good luck with the upgrade.