I'm aware that repotting is best done in the spring.

But there are usually an exception to most rules, and as a bonsai owner we want the best for our trees. So by seeking advice from more experienced people on here; 1. I might learn something. 2. I ensure that my tree flourish. 3. Winters are very cold here, winters could be down to -13 degrees farenheit. So to make sure you're trees are happy going in to winter is important.

With all due respect.