Great topic and anyone who quotes Lyle Lovett deserves a response!
Speaking as BOTH a former CEO and an investor, I highly recommend you add the two outside directors:
1) You are moving into a zone where operational and serious company scaling wisdom and experience are critical. Savvy current or former operators can bring balance to the board, and more importantly really help you scale the business, and better predict what’s around the next corner. They should also be valuable in recruiting and customer or partner access.
2) Board governance is no longer a joke. Its serious business and you need serious experienced people guiding you, and doing the job as judiciaries first, and investors second. Again, you are moving into a zone where this becomes ever more important each quarter.
3) I highly recommend one of the new outside directors meets the financial requirements for an audit committee chair.
4) If you continue to succeed, and an IPO is in your future, the VCs will bail quickly after the IPO -- it’s not what they are paid to do. You don’t want to be caught in a bad spot where you have to quickly hire directors.
One final thought -- the best board meetings (from the view of value to the CEO/leadership and the company) are ones that focus on strategic issues first, governance second, and operational details third. A couple of boards I'm on have a strategic topic or two set as the main agenda item. Operational metrics are provided for review, but are not presented -- there is a short session allotted for directors to ask any questions they may have related to the operational metrics. Boards are supposed to govern and guide the long-term focus and value of the company, not run the business.