Tri / Triathlon / Triathlons - do they float your boat?

Are there any good Tri coaches on the forum? or do I need to head over to the TT thread? I'm currently pondering my assault on 2013 and I'm thinking I might like some advice on how to balance my ambitions of a fast Ironman (well as fast as I can) with my goal of finishing a 100mile ultra... I'm struggling to think how I should split my run/bike training to get the best gains from both?

Someone like Nick Thomas of Man Tri is the kinda person you might want to chat with, here's his blog:

http://enduranceprojekt.blogspot.co.uk/

Worth a look in on TriTalk for advice maybe? There's plenty balancing similar aims over there.