Happy to go with option 1.
That way (as stated) - its the cheapest option for all, no tyre warmers, no generators, no need for spare wheels.
Also - are you suggesting that there is a single type control tyre for both dry and wet or a control tyre for dry and a different wet control tyre?
I assume the former, but your poll suggests control tyres and not a control tyre.
I still think it should be one type tyre for both wet and dry ie a D207RR or similar.
Tim