Intensity training over your target distance - enter some 10 timetrials, or mark yourself a 10-mile out-and-back route and thrash it.

You're riding a Trek Madone, that's a perfectly lovely bike the mere paint-job of which costs more than my Sora-equipped beast. Assuming you haven't gone weird and put touring tyres on it, the aero bars are the obvious thing. Get into practice with that, getting a nice deep powerful tuck and good flat back, before springing for an aero hat. You may need to add some lower-back stretches to your training programme to develop adequate flexibility.

And the extra 10lbs, of course - if the aero tuck is being fouled by thigh/belly interaction, that's a good place to focus. Tri's great for that: 'just' do some long steady early-morning runs and practice iron-willed brutal portion control.