Well, it is not daunting, but the system you get needs a lot of baby-sitting if you wish... For one, I cannot seem to be able to upgrade sub-site easily -- will most likely have to try and replicate a setup from another 5 instance.
Also, this is a very small instance -- only a few applications are used and there are only a few users. Not sure what would be the impact if one were to move openacs.org...