Center and Mains


I "feel " the need to apply more power to my front speakers. One because, I'm not using half of their capabilities (wattage) plus I'm hoping the added power will clean up / reveal those little hidden jewels within a recording / sound track. 
My question is can I add power and find those nuggets or should I forget the power and find the right processor?
front mains: Def-Tech 7000 Sc1000 watts
http://www.definitivetech.com/products/bp7000sc
Center McIntosh XCS200 600 watts
http://www.mcintoshlabs.com/us/Products/pages/ProductDetails.aspx?CatId=speakers&ProductId=XCS20...
Processor: Denon 4308CI http://usa.denon.com/us/product/hometheater/avreceiversht/avr4308ci
Amp: 7 Channel MC8207 http://www.mcintoshlabs.com/us/Products/pages/ProductDetails.aspx?CatId=amplifiers&ProductId=MC8...  
Another motivation, (putting it all out there) I have a 12.3 channel speakers setup in place ready to go, but without the amp channels or processor to push it all  - it would allow me to use the MC8207 to power all the surrounds nicely.
128x128jsigle
I'm in N Alabama. I have a Marantz dealer close and have reached out for a demo. Your point about used is a good one and that's one of the reasons I've moved to separates from an AVR. Making it easier to keep up with tech. What is a Oppo?
Oppo is a DVD player that plays almost every format on disc.  It has a nice built in volume control, great quality, nice DAC and tons of features.  Go to oppodigital.com