Hi Chris,
I'd also like to point out that when we first came out with the open source HQ project, it was with the intent of making something useful for sysadmins, whether they bought the enterprise version or not. Also, you should take a look at our 3.0 beta and see what's in store for the next version.
For now, take a look at 2.7 and see if it fits your needs. In the near future, we will come up with a price plan for support of HQ open source. In the meantime, contact sales if you're interested in that.
Either way, please tell us about your experiences with HQ. We definitely want to know how it goes!
-John Mark