Here's another idea....leave the trees unpruned, just as they are, and when trees once again leaf out next spring....do some multiple air-layers, and root many new trees from all the unwanted branches. Air-layers are just as easy as rooting dormant wood, and you'll get fruiting-size trees a lot quicker than by starting trees from cuttings. Air-layered trees can bear figs in one season. You can even do multiple air-layers on the same branches, and increase the yield. I can "see" at least 20 new trees coming from all the extra branches. You can also do both....take one branch and subdivide into a few cuttings....and air-layer the rest, next spring, when tree is actively growing. There are posted threads showing how this can be done.
Rooting dormant wood cuttings can be fun, but keeping them alive and healthy through the dark, dreary, winter months can be a challenge. Almost always, the new growth will be weak and etiolated because of lack of sunlight, and weakened growth will sun-scald when brought outside to grow, next spring, if not properly/gradually acclimated to full-sunlight. You will avoid all of this unpleasantness, if you throw some air-layer on those extra long, branches.
Just some thoughts. Good luck. Keep us posted.
Frank