Hi Scott! The pines look like fun. November through February is a good time to work on pines in your area, and you also have a great bonsai club in town:
Taking the tree to a workshop could be helpful you could get ideas about what kind of work the tree will need throughout the year.
As for the work itself, it looks like you can prune and wire the tree this fall or winter and then repot the tree at the end of winter. Because the trees are relatively tall compared with the size of the trunks, I’d look to reduce the size of the trees and then add wires to help you create a design that makes sense for the multiple trees in the group.