Definitely a good thing to reduce, as Misfit says. There were many places where that was a problem and better to get that sorted asap.
Cool, its a bit better setup now.
Depends on your plan but could still apply some wire to set the branches up with some movement, even if you aren't going to use most of the branch in future, I still like to wire to look more like a tree itll become in future + practice wiring.
Unsure of best times, probably as Don says, yesterday was the best time but you should do some carving or just reduce with the knob cutters, the remnants of the grown out original trunk sections that were chopped. So it helps the future trunk line become more smooth.
Remember not to cut back to where you want the trunk line to end at, cut back to where the resultant callus tissue will go to.. if that makes sense..