wow.....that's not exactly what I'd call an easy question to answer. Starting with, more power, is not necesarily better, or, I should say, less problematic. First off, understand that you will spend 1500-2000 dollars rebuilding your head, secondly, if your car is high mileage, which by the way 77K is not high miles, nor are you do for a rebuild, unless you are unhappy with your performance.
Any way, to make a long story short, there are many different routes in which to go all motor in a honda, depending on what you want to spend. What kind of budget are you on, and what are you looking to accomplish???
Later,
Aj