As an underwriter, I can tell you it will be tough to find a carrier in the standard market for this risk from a property standpoint. Have you checked with any E/S markets? FM Global maybe could help you.

If you use ISO online services, they have a report you can order that is building value replacement cost estimator. It also uses the Marshall and Swift tool

I'd say pursue the ARM designation then first.

Have you considered pursuing your CPCU designation? I would highly recommend it, it is the "masters of insurance" and a highly regarded distinction among insurance professionals. Having just completed mine, I have to say it was time well spent!