I have a '73 V4B, and I run it through a 4x10. It is darn loud. So try it with your 4x10 to see if it works for you. If you still need more volume, add another 4x10 on top of the one you have. Skip the 410/115 combination (for a plethora of reasons that have been discussed on TB ad nauseum). A stacked pair of 4x10's will peel the paint off the wall with that V4B.
"Too much of a good thing.......can be wonderful!" - Mae West