is it me, the a/v setting or the speakers?

[avncars]

i just recently completed my theater and am starting to second guess all my decesions in equipment...my current setup is 7.1, for front L/R i have Paradigm studio 100 V.5's, my center is a Paradigm CC-690, side surrounds are Paradigm adp-370's and my rear surrounds are Paradigm studio 10 V.5's on stands, and a Jl f112 and Jl f113. The problem im having is i feel like my front sound stage sounds absolutely incredible along with the subs. but the side and rears arent too noticeable at all. i know the surround channels arent suppose to be over powering and are for surround effect, but unless i get really close to them i cant even tell that there on. to power them i have a Marantz Sr8001 for my preout and a B&K 200.7 amp. i used the Marantz in my previos setup, and lost the manual for it long ago. im not really sure which setting is best to leave the Marantz on, and not sure if that would help make my surrounds become more noticeable. would it be stupid to get another pair of Paradigm studio 100's for my rear speakers or is that overkill? im also wondering if my side surrounds are placed too high, the bottom of the speaker begins at about 6' 6". i have no choice for the height cause i dont want people walking into them, but some dipole/bipoles have a speaker mounted at the bottom. would that help me? any suggestions, help or info would be greatly appreciated...