Opinions on these names please?

They are lovely, but the trouble with names is that some people associate individuals with them and wont be able to turn that off. Arnie, for many people will mean schwarzenegger and they won't be able to look past that at first. Anyone who gets to know your (50% chance) son will be able to ignore that but it will colour some peoples first reaction. Having said that, if you really like it then go for it and sod what other people think.