TL450 is a great starter. I had one when I started. Is that the LED model? Mine was the CFL and mushrooms and Xenia were fine, zoa struggled a bit more. If I recall getting rid of the bioballs is generally recommended, nitrate factories. Gives you some space for other chemical filtration purigen, phosguard etc.
The standard skimmer is a bit of a pain and generally not considered to be the greatest but is better than nothing.
I moved from the TL to a Lido 120 that I had drilled and sumped and now onto a Akwa elegnace 300L. Boyu was good to learn with though getting used to water changes etc. Being small though things can change quickly but from experience you can keep things in control nicely if you do your 10% water changes weekly.