Build my first real home system. I in the car audio industry for about 15 years and always loved polk and focal speakers. I'be narrowed the receiver down to an onkyo 509 or denon 1912. Will be using a bic f12 sub. For the speakers I need something wall mountable due to my 1 year old son running around. All equipment is in media closet about 50ft away. Thanks for any suggestions.