Hi, do you still need help with this? I have some thoughts like you should look for a rim that is tubeless ready. It's also possible you can covert your existing non-tubeless rims to tubeless. ParkTool has a Youtube video on the topic: https://www.youtube.com/watch?v=MuEiBSAKWLI
If you buy a new rim, you're going to need to have it laced up to your hubs which is typically a job for your local bike shop. You can seat the new tubeless tires yourself typically with a floor pump and some tubeless tire sealant.