The proposed mods are to be on a gun that will only be used for shooting at the range where there is no reason at all to decock or use any kind of safety. The OP seems to make that clear in his initial post. As long as the gun is used strictly in that setting, there is no increased risk at all, but outside of that setting I would want the gun returned to its normal configuration. I agree with JohnHL that the OP seems to understand those things.