The CAAD10 is a great starter bike to build on and I would suggest adding some low hanging fruit to it.

Clip on aerobars, fast forward seatpost, Xlabs BTA, LG Course or Specialized Evade helmet, GP400 tires w/latex tubes and fit.

Ride the trainer using sufferfest and trainer road over the winter and focus on increasing your ftp and making you pedal stroke more efficient.

Power meter would be nice but you can add that later.