Duncan,
As you are discovering, there is a hell of a lot to find out but don't be forced into thinking that you have to 'do' your trip like everyone has done theirs. Incorporating all of the 'best practice', most efficient routes (GPS wpoints), journey-times between x and y isn't the most important thing. Creating the experience you want from your trip is!

People use the Hubb for a number of different reasons; to say hi (as you've done), to tease out hits and tips, sort out a problem, liase with travellers and share resources etc. What it won't do, and other Hubb users correct me if I'm wrong/harsh, is troubleshoot your RTW trip like a teacher marking your homework. All of the answers to your questions are on the Hubb for you to find and it's certainly not my position to tell you how to use this wonderful resource. Don't be disappointed if you don't get a comprehensive reply to your questions - be mindful that everyone else is busy planning trips/hunting for solutions etc. so my only suggestion is to break up your questions into smaller, specific chunks. Check the Hubb to see if it's been posted before, post in the correct areas and above all, remember to give back to the Hubb after you've used it by posting travel news as you research/pass through places and taking time to answer questions if you know the answers.

Hope the planning goes well. I'm off to Africa next week (L.W.D. ).
Ed

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Find out details of my 2011 trip to Siberia on a lightweight dirtbike:
www.brighton2expeditions.co.uk