I've been also doing this kind of thing for a few months and just want to suggest you look for one with the full media player buttons like this since that works directly in Kodi, so if you're using a PC/Mini-PC with Kodi on as a media player, as long as you don't exit Kodi with this you pretty much have typical experience you do with a smart-TV or an Android TV media box with dedicated remote.

That said, I don't recommend this specific model since the buttons are requiring stronger pressing to work already and I've only had it for a few months - the idea is great but this specific device is a low quality implementation.

That said, I started with a wireless keyboard and mouse and still have them connected to it but in a corner, for the few times I have to do stuff with that PC outside Kodi, since the mini-keyboard on the back of my air-mouse and the air-mouse functionality itself are more awkward to use than an actual keyboard and mouse.