This is a great question, and there are many possibilities for training that will help you improve. My first few questions back to you would be this:
As you can see there are many variables to look at when you are looking to improve upon your overall race times. Also, a time of 1:16 isn't poor. Are you comparing your overall time with your competition or your age group?
Seeing as how this is your first year of racing Olympic Distance there will be room for improvement in all three disciplines.
Here are the basics:
The saying goes: bike for show, run to go. If you go too hard on the bike you will ultimately ruin your well paced run. Too many times I have seen people push hard on the bike, pass many people and then get re-passed and lose their pace on the run. You will need to determine how hard you can push on the bike to get the results you want.
Good luck and I hope you achieve your goals!
Ali WinslowHead Coach, Boston Performance CoachingAssistant Coach, D3 Multisport