You're going to have a nice view!
Just curious, how deep do you have to dig the foundation in that area? (I can't tell from the pic.)
Here (Eastern Canada) have to dig at least 6' down.
All of what Mark said. I started trials just over 2 years ago at age 56. Continuous very small improvement on the trials bike has really helped my mountain bike skills, which was my original goal. Slowwww-speed/stopped riding and body position transfers well to riding MTB on bumpy bedrock. I put a lot more time on the MTB, but enjoy all the micro wins on the trials bike too.
In my limited experience (Echo 24"), I am not impressed with Echo TR hydraulic disc brakes. If you don't mind the noise, the Jitsie comes with Magura HS33 rim brakes.