Seth, I'd find a different tint place rather than replace your windows IMO. Take a road trip if you have to. There are a few reputable guys in Des Moines and they don't cry about curved glass. Tint is a double edge sword in Iowa. The legal limit on side windows is nearly clear and tint tickets start at $127. I never had any issues with the 5% I had on my 40. But anything newer and you're going to be seeing the Troopers behind you for sure. If you do it yourself 3M brand tint is what the good places around here use. I'd check in Ft. Dodge, Clear Lake, or even Omaha before I'd replace the glass IMO.