Unicycle advice

I’m 6’3", weigh 240 lbs. and have been riding a 24" Schwinn off and on for 20 years. I’m wanting to learn to do some hopping, stairs, curbs, etc… and fairly sure my Schwinn isn’t built to handle it. Also decided the original seat is not good for 40 minute rides… Looking for advice on a brand, model, and possibly even a dealer. Live in the Austin, TX area.

Thanks for any help.