OK yeah, so part of the reasoning behind the questions was...
1. to make you think about them (and I know you know that

...or at least, if you didn't appreciate them, then you would now
2. Cos in my head I was questioning the 'let's practice on one first' approach
Why the doubt over a practice effort?
Because it's going to take time and effort to get to the point whether you have a good feeling about whether what you're doing is working. Potentially years (although there are many many influences that can play a part in actually how long, and you'd hope it
wasn't that long).
So, if all your effort is going into something you're 'just' playing with, you have the risk of..........
1. losing impetus/interest/drive (happens to all of us to varying degrees at times)
2. if you can keep going, significant use of effort gets you to a point where you have to start all over again on what you wanted to do in the first place
From your answers, I'd recognize that perhaps a learning effort is indeed the way to go. However, note those points I made and try not to underestimate their importance. It's a tough call, with many nuances, but if there was any way to position yourself to go all out straight into what you really/ultimately want to do, it could give you better long term results by doing that.