Agreed on DIYing because you want to and enjoy it. And for that I would very much recommend the Avast skimmers. The kit is a real joy to assemble, and it is beautifully designed from a maker's perspective. It's the only skimmer I've ever owned, but it runs quietly, has an easy to adjust re-circulation feature and water height adjustment, and skims amazing well. Everything is substantial and looks nice to boot.
I can also recommend the swabbie kit and their media reactors.
https://www.avastmarine.com/collections/you-built