I have a Cambo monorail 4x5 and its weight is 9 kg more or less depending on the lens used. The Gitzo is the alu13 version and weighs 3.2 kg.
I travel most of the time by car and then a 15 min walk. My questions are:
Is the Gitzo stable enough? (better then the 4-segments variant)
What do you think about the double panning system? I think it solves for the the leveling difficulties ballheads usually have.
This combo falls within the budget at this moment.
Go for it, or save some more for another combo? e.g. Gitzo cobalt version or 4 series
Anticipating your input, cause I want to go out ASAP.

Regards,

Peter.