I like what Gregory Pierce and the others have had to say.
To me, you want to pick your top 5 accomplishments needed to turn your start-up into a stable and growing business. prioritize them and that should tell you who you need. There is a great book that I like called the Founders Dilemma.
It has a great deal of useful tidbits. Play with those suggestions.
If you are going to be CEO and Chief Product Manager, then get good Finance platforms in place and Revenue. Everything is strategic AND tactical for a while. You can drive yourself nuts trying to be everything.