You're all going out waaaaay too hard. In regards to pacing TT's, there's probably no one better than Matt Clinton.

2014 National 10 - 18:10 at 384w. Peak of 666w. https://www.strava.com/activities/188023135
2014 National 25 - 48:46 at 374w. Peak of 580w. https://www.strava.com/activities/174925401

That was my experience. I'd start at the top end of vo2 max level for :10-:15 and then settle in. A 10-mile TT provides plenty of time to make up a couple seconds, especially if you have more left for last couple minutes than less.

I can do that! Hold my beer! :D
https://www.strava.com/...s/309934133/analysis
Actually, funny example how one should not start. I was almost late to the start line and forgot to take off warm (and bulky!) jacket, so after initial 10 sec speed-up I'd had to sit upright, take the jacket off and throw it into bushes on the roadside, still cranking much more power than it would be in normal situation :)