I am wanting to build up my Trek Earl for a touring trip this summer. It has a steel frame and I am ok with that. I have been able to find a lot of parts used on ebay and wanted everyone's opinion on my proposed setup:

Bontrager Race VR drop bar
Shimano ST-4503 Tiagra STI 3x9 shifters/brake
Dura Ace 7700 brakes
Shimano XTR M970 front deraileur
Shimano Deore lx crankset 46/36/24 175mm
Shimano Dura Ace 7700 rear deraileur
Harris Cyclery CS923 Cyclotouriste 13 cassette
Brook's Champion Flyers seat
AXIOM 'TOUR DU MONDE' STAINLESS REAR RACK
Tubus Tara front rack
Bontrager waterproof panniers
Rebuild stock 700c rims with quick release skewer hubs

I think this is all I have looked at so far. I am not for sure if all of these parts are compatible or not. I know that the XTR front deraileur comes as both top and bottom pull. Also, I'm not sure what size of tire and tubes to get. Any suggestions?

I appreciate it guys!