First, welcome to the shack. My first piece of advice would be to mount them any way your wife want's you too.
addle: Seriously all the options you mention are fine. I put mine on wall mounts so I could have more control over them, I can face them straight ahead or angled down at a 45 degree angle. And also mounting them on the wall is perfectly fine so I don't know who told you it was a bad thing but I have alway's done so with good results. So again welcome and let us know how it came out.:wave: