I would give most of my left nut ... not all of it maybe two thirds or something around there abouts to drive on that track

and i should mention that my left nut is substantially larger than my right nut by almost 2 to 1

So what is the consensus for the time here? This is 20 600 km bridge to gantry right?

The BTG(Bridge to Gantry) time on that video is 8:49, but that is not the regular Touristenfahrten layout! You can see how he enters the old pitlane at 0:27 , since it was the F1 weekend and the track was occupied by a massive grandstand.
So translating that lap to the usual layout would be more like 8:30BTG which is good considering that’s back in 2013(the track is a bit faster now) but the car has the right mods, could go faster for sure.

You can get close to 8:00BTG with stock power and proper suspension/tires, there are plenty of good videos on youtube now. With shorter FD, headers and tune, under 8 is possible.