Welcome to the forums, I see this is your first post. I'm going to suggest you reach out to the rim manufacturer. Let them know that you are concerned that their rim might not work with certain standard-sized tires. Perhaps they know of a brand that works well with their rims. I've encountered tires that were darned difficult to get onto rims, but never a rim that was that small. I think Gatorskins were some of the toughest to get onto a couple of my bikes, but I could be mis-remembering.
Good luck.