Rate my system/advise

mattmiller and tubebuffer, yes, I figured the NAD is somewhat of a bottleneck. I spent more than I wanted on the ARC REF 6, hoping that a good enough preamp would be enough to overcome this. I was looking at Pass Labs and Parasound monoblocks for the future, but I figured I should first prioritize audio racks and room treatment for now. I honestly have a low paying job and have no right buying this equipment, but I have been working crazy overtime to be able to buy this. I hope the NAD's will suffice for now, since those amps are quite expensive. 

rocray, I have not set this system up. I have no idea how this combination will sound. I was looking for some advice on how people will think the ARC, NAD and B&W will pair as far a power goes. That is not all I am looking for, but part of it, including room treatment and isolators. I have degrees in physics, which helps when I read the specs about this equipment, but I am still far from grasping all of it. I can understand basics, but I have years ahead of me as far as understanding how to optimize all of these components and how they all work together. 

tomic, thanks, I was pretty excited about purchasing the REF 6. I can't wait to set it up.

I am now looking at Franc audio racks. Although I will spend twice the money, it seems like this will be superior to the Butcher Block/Isoacoustics combination. 

LOL McIntosh….there are a number of brands better than NAD or McIntosh. Buy what sounds good to you not what some people here say you should buy.

btw I have a McIntosh amp in my hunting camp. Use it 4 times a year. Good place for it. 

The OP is about to learn an expensive lesson.

hahaha secretguy. I found that out very quickly. I demo'd some cheaper speakers, including Paradigm Founders series and other B&W's, expecting a cheaper system. I then demo'd the 803 D3's, just for fun. They offered me a great price, selling me the demo pair. I impulsively bought these. I then quickly realized, with speakers of this quality, each component should probably be within that same price range. I realized I fucked myself pretty quickly. I;ve been working an average of 85 hours a week for months now paying off my debts. 

A good preamp will make up for a bad preamp, but it will not make up for a not-so-great amp. Best of luck. Listen to what you have before buying more stuff, especially acoustics.