Ok so I heard back from Lauren at C&J.
1. In regards the widths, they all have to be the same... "The reason behind this is that we have specific patterns and this would mean that we would not be making up a batch of the same boots, they would be different boots if the widths were different".
2. The Ridgeway sole is no problem. It looks pretty cool to me and all the reviews I've read are positive.
3. They are unable to ship the completed boots to the US for distribution... "Unfortunately we are unable to send it to a store in the US because you are not placing the order through that store. If you place the order through the NY store then we could send them the shoes but then the prices will be higher as I am sure you are well aware".
So, the limits of the group MTO are a minimum of 6 and maximum of 12. Therefore, I think we need to compile a list of people now who are serious about taking part in the MTO. If you are interested please just shoot me a PM with your 341 last size. I will then update this thread accordingly.
I will also head to C&J NY this week to try on the 341 last. I'm a 13D in the 325 (RL Marlow Wingtip) so at the moment I'm assuming I'll be this in the 341. Sizing will be highly important as there will be no refunds for size mistakes.
Personally I'm pretty excited at the prospect of this boot!