Why not just wait til spring, get a big wisteria from the nursery (1-2 gal. pot, 3' high) and work on that? You'll have a decent sized trunk to work with, 5 yrs less of fiddling with seedlings, and being more established, your chances of keeping it alive will be better. Plus you'll have the winter to do some reading on bonsai and tree growing in general. Joshua trees are desert plants, not real trees, and you might want to rethink that one if you're just starting out, in NY.

Hello,

Is "wisteria seeds" Japanese endemic species?
If it's right, you can plant it in the depth of 1cm ground in autumn season.
And let's sprinkle water to keep not to dry . you need to care from frost.
Then it will sprout in spring. and you can see the flowering season 10 to 20 years after.

I think "Joshua Tree" sprouting is more than 20 degrees.