This looks like an interesting position, and it seems like maybe you're putting more emphasis on doing infrastructure/ops yourselves vs. trying to outsource as much as possible to a hosting or "cloud" provider. Rock on.
While I respect your desire to be stealthy, I'm curious how many developers you have (i.e. is ops being hired after you've hired ~5 developers, or after 2?), and what are your reasons for (presumably) coloing your own boxes vs. either using managed hosting or ec2? (I personally think each solution has its merits, and for anything security or performance/jitter/avail/config critical, I'd still go with a cage and leasing or buying hardware; EC2 rocks for ease and in 5 years will be even better, and is great for dealing with peaks)