Countin Carbs,
I faced a nearly identical situatrion when restoring my Logghe car (except, being a Ford everything is symmetrically opposite on the engine) and I chose your
PLAN B.
I'm sorry I do not have a better pic.
Gas pedal on the right, barely visible behind the red shield mounted off the lower frame rail. You see the mandated throttle return toe loop on the pedal.
Then through a couple of bellhousing mounted bell cranks with Heim jointed links to a short (yellow) cable out the top of the body work just behind the block plate. The yellow cable is actually just a piece of nylon air line with a piece of stainless steel welding wire inside it, threaded on each end for small heim ends. I carry a spare stainless wire with me but it has never broken. Then to a common intermediate shaft with additional adjustable Heim jointed links for each carb which in my case are sideways mounted.
Whew. When I was done I counted 138 separate pieces needed to make up the linkage. But it works well. Good luck with your project.