Try a 25mm tire instead of a 23mm tire, and experiment with pressures.
Instead of going for an aerodyamically-efficient body position, experiment with different stems (your lbs should loan you a few stems) and find the stem angle and reach that makes it easier to pedal out of the saddle.
Get a smooth unpadded saddle with a shape that lets you move fore and aft on it as needed.
Ride at 72 gear inches or below (get a 19t cog), and learn to spin.
Lower gear inches give you more acceleration, easier climbing, and the ability to brake without brakes and without skidding.