Stuart @Stuartw, I definitely encourage you to try to get your new system working with auxiliary input so you can play along with backing tracks. It really will open up your understanding, awareness, and feel for the music in a way that playing in isolation just can’t. I wouldn’t necessarily say you should stop everything else, but I’d definitely set aside a little bit of time to try to get that working soon.
Like you, I have no plans to play with other people, ever. I’m just interested in learning as much as I can and becoming a better player, and I absolutely think that this is an essential piece of doing that.