First off, if I may ask, what part of Oklahoma is this new memorial/museum going to be? I'm a native Okie living in California, and I go back to visit my family once or twice a year, always making sure to visit one or both of the 45th ID Museum or Ft. Sill.
The first thing to find out, i.e. ask about, is whether they anticipate having room for this sort of display. The 45th set up several showcases, as did the Kirkpatrick Air and Space Museum in OKC (I still have 4-5 models in various displays at the Kirkpatrick Center). If so, I imagine they'll be happy to have yours, even if you're not up to Shep Paine's level :-). Museums understand the value of having good, relevant material on display. Even if they have limited space, you might look into a smaller display area with rotating contents. This would be extra effective if there are other modelers in the general area as willing and interested in contributing as you are.
Randy (6 years in Denver, 6 years in San Jose, and I still occassional let slip a "Y'all"...)