Ack! Sorry. Coffee kicking in.
Alex, I like your setup and may copy it.
As for a vise, I guess that you know your needs better than I.
You may want to consider getting a patternmaker's vise if you do small things.
I'm saving up for the Stewmac one after I build my workbench (which won't be as nice as yours).
https://woodgears.ca/workbench/build.html
For my top, I have a maple laminated slab that's 40"x1.75x 18.5".
My workbench will be 34" high and optimized for guitar building and small stuff (speaker boxes, knife handles, etc).
Aside from a patternmaker's vise, I'm not sure what vise I'd need for guitars....maybe a moxon thing?
The only thing constructive that I can add is that you are sorely lacking a good holdfast.
Try the Lee Valley screwdown one (if you value silence) or the Grammercy one (if you like whacking things).
They will make your clamping life much easier.
I figure that I can build a full sized Nicholson hybrid down the road.