Unless you buy a package deal, all in one sets really don't provide you with good sound. And by package deal I mean a speaker manufacturer gives you a discount on a set of their standalone center, surround, front and subs, then you buy an AVR separately.
HTiBs don't have components sold separately.
For wireless speakers to work properly IMO they'd have to be active, so would need to be wired into your AC. I'd rather just run speaker wire, it's pretty easy to have no wires showing.
This is the height of the wires you can see on my surround channels:
http://images.static-bluray.com/htga...21944_full.jpg
Approximately 4ft long.
Alternately a bunch of my friends listen to so much vinyl that they forego surround sound and listen to all movies in stereo, so they can sink all their speaker money into their vinyl playback.
I love movies and surround music too much to do that.
Anyway, any of those speakers could be re-sold without losing much value.