Hi Steve
Agree with everything Doug says.
I know your area well. Grew up in Sutton and lived (until last year) in Caterham. Banstead South and West onwards are very nice areas to work in.
You mentioned much about kit. It's very easy to tell you what are must haves but they all cost. Get your basic kit working for you and grow your kit from there.
As for carpex, well I think things like this are dying because of the internet and these type of forums. You don't need to go to Carpex to find out how good things are these days as you can simply ask those that use them daily.
And as for CCDO, I think that for someone in your position you'll find the evening before (at the hotel) as much a learning experience as any you'll get on a course. That said I certainly feel that Doug, Chris's and Mike's will be of great value to you. Jason and I have been in this industry for less than 7 years between us and we arranged this with (partly) people like us/you in mind.
You might even be able to hitch a ride with Chris as he's only just down the 217 from you. Be warned though, he goes on and on and only talks about conifer tree varieties so it could be a tough journey for you.

Pete