Very cool, there's nothing like that first tri build. Since building my first tri, I haven't looked back, my poor quadcopter hasn't been touched in months. I don't actually own an i86 board but I'm fairly familiar with them. They're good boards, comparable to the original kk board but with better sensors and are much easier to setup. Never seen one fly on a tri though but I imagine it'll do alright and I look forward to hearing how it does.
I hope to post a similar picture myself here in the next week or so. I'm currently waiting on 3 (Hobby King) orders to show up, 2 from Hong Kong and 1 from the USA warehouse.
Are you going to do a build blog?