As someone who is trying to organise a UK-based grid (for educational use - http://mimuve.cs.st-andrews.ac.uk/ if anyone here wants more information), I'm frankly amazed people are trying commercial grids this early on.

OpenSim is an insanely fast moving target, whose hardware and technical support requirements change at a rapid pace. Its feature list changes weekly, and goals only slightly slower than that.

There's no economy to speak of, and unless you can lure content creators in by the hundreds, content is going to be a major issue. Not to mention you then need to persuade them your grid is a safe place to hold their stuff.

As grid-grid connectivity makes progress, be it OGP or hypergrid, it will become more feasible as content can be moved around, but for now most OpenSim grids are barren wastelands that won't attract anyone but the earliest adopters.