Definately take the XR's or Continental Travel Contact tyres (my faves) for a trip like that. You could fit slicks for Europe and take the XR's in a pannier as folding tyres to switch over when the roads get rough - I am.
As for the Dynohub, don't bother - just take some blinkies. Chainrings, the standard setup is fine, we spec the gearing for long-distance touring. MKS GR9's are good, I use MT-Lites myself, just as good, it depends on whether you want toeclips and straps (my choice) or clipless. As for wheels, go for the Rigida Andra 30's awesome, awesome rims - stronger than the SunRhynos in our and my opinion, plus they come in a carbide braking surface which can prolong rim life, but the standard brakes are fine.
The bottle cages in that combo are good, but I've always been happy with el-cheapo alloy cages.
Thorn Racks - VERY strong
Brooks - Ultra worth it, especially for £17
Hope I could help!
Also, if you ring Thorn, ask to speak to Kyle, that's me!