It's a single story house and attic access is easy so it shouldn't be too bad to run wires to the side walls.
I'm going to let the installers do it because:
a) I don't have the tools to fish wire through the walls.
b) I don't want to do it myself.
I think the right answer is to pull new wire to the side walls and place the speakers there but rather than patching the in-ceiling holes or putting a blank wall plate over them, I was wondering if I should just put in-ceiling speakers there and try them as an experiment.
I have walked through model homes with in-ceiling speakers and I didn't like the feeling of the sound coming down on your head, so I wanted to hear opinions from others if they like in-ceiling or not.
Thanks for the reply Mtry.