I use Conti Race King Supersonics tubless on 355 rims using Stans Sealant. They have really porous sidewalls but sealed up pretty easily with the sealant by inflating to 40-ish psi and shaking the wheel to plug the hole with the sealant until no air comes escapes(videos on the ZTR site).
Getting one of them seated was another story and I needed a friendly car mechanic to do it with his compressor, the other one went straight on with my track pump.
Not sure what tyres you'd need for your rims as my tubless experience is as above and doesn't extend to UST setup, I'm afraid. But the Stans Sealant will seal most tyres I reckon with a bit of patience.
Just Ride Along (I think) have a comprehensive set of guides and FAQ's to going tubeless.