Yeah, in the beginning a high seat can be more intimidating. It’s good to eventually learn to put as much of your weight as possible on the seat, but just having one leg fighting the other as you pedal around can be an OK way to get started learning to ride. It’s simpler, or at least seemed simpler to me, than adding the third variable of my full weight on the seat.
Now that you’ve got a good unicycle for your specific needs, all you gotta do is practice. Someone watching you who knows how to ride can be extremely helpful, if you can find such a person. A friend of mine started learning to freemount before learning to ride, and it seems to be working for him, but that’s definitely not what I did. This thread is by a guy who learned to ride on a large wheel like yours starting from day one, so it might help.