As much as I respect Mr Blow, I would choose Mr Spencer Jones, or rather I should say, one of his technicians.
I understand you have experience from complex classic cars, but there are a couple of major differences:
Bristol has an Aluminium skin, which is a pig to properly repair. You can not get after market panels, or find good second hand ones. That is the Negative.
The positive difference is that the Engine and Gearbox are "common" Chrysler/GM bits, so original and aftermarket parts are plentiful, also you can get upgraded parts.
Compared to a Jag engine the Chrysler one is "stone age". Not meaning in a negative way!
I do not want to push you away from your Bristol ownership. You seem to have made your "apprenticeship" on a couple of lesser cars (
and are ready for a Blue blooded car.
You will love the car.
BTW, have you thought of checking out Mr Blow's website?
Personally, I would rather pay more for a running car!