I will second the point about outsourcing non-critical stuff. One of the major complaints for our company (not a startup) was that our bug fixing cycles were to

I will second the point about outsourcing non-critical stuff. One of the major complaints for our company (not a startup) was that our bug fixing cycles were too slow and customer wanted faster service packs/ releases. Outsourcing the bug fixing process gave very good results. A strict code review process was the biggest investment from the on-site team (sr. devs would take time daily to review the changes done by offshore team).