With a fleet of cannondales I am a pro at this;
Tools:
Cannondale specific hollowgram crank tool ($30 talk to your cannondale LBS dealer) - worth it. There are work arounds but just get these two small pieces and make your life easier.
Park tool BB press - or any press system will do, use the cups from BB puller below
Rubber mallet
Park Tool BB Puller - BBT-30.4 Bottom Bracket Bearing Tool Set | Park Tool - you need this, dont try without it
Loctite - green stuff not blue or red
Takes about 40min the first time, 20min once you know what you are doing.
Biggest thing is making sure that you clean the surfaces and allow loctite 24hrs to cure before you reinstall cranks,