Sharpening is fine. If you are doing a lot of rails though, I would suggest rounding underfoot (it will happen eventually anyway) just make sure your edges are burr free, that is key!
Also maybe consider asking them if they will put a larger bevel on it (I do 3 degrees, 1 degree is normal) That way your edges are still sharp, but less likely to hang up. It takes some getting used to, but I think it is worth it.