you are a man with a plan, impressive.
It's very nice to get a vintage piece back that has been properly checked over by competent people you trust. I visit a friend who lives a few miles from Audio Classics, I feel they are in my back pocket!
I see your amp has 6SN7. My Cayin has 6SN7's and 6SL7's. I mixed em up by mistake, blew one. Researched, picked a matched pair from Brent Jesse, I was very surprised at how much difference in sound they made, in my case not good. I was able to send em back, try another pick, they sound equally wonderful as the ones Cayin used whatever they are. Just saying, I would ask VAC some advice about recommended 6SN7's for yours while they have it.