You're either not hiring at all or it's probably your single biggest block of time.
No matter what you choose, build stuff and be around smart people.
Another way of looking at this, is that the best companies are almost always mission oriented.
You should think about for the next 10 years, you're going to be giving out 3-5% of the company every year.
... We probably funded a rate of something like one out of ten solo teams.
Remember that you are more likely to die because you execute badly than get crushed by a competitor.