Onkyo + Polk Monitor Series?

I purchased this setup : http://www.newegg.com/Product/Product.aspx?Item=N82E16882120160
The way I understand it the receiver puts out 130w@6ohms, so I don't know how that translates into an 8ohm speaker.

I have scrapped the front sound stage for:
L/R : Polk Monitor40 (20-125w / 47Hz-25kHz / 8ohm / 89db) http://www.newegg.com/Product/Product.aspx?Item=N82E16882290202
Center: Polk Monitor CS2 (20-175w / 50Hz-25kHz / 8ohm / 90db)http://www.newegg.com/Product/Product.aspx?Item=N82E16882290212

I am happy with that upgrade so far (although I am still figuring out how to use the full range on the center AND the sub, the amp won't seem to allow it).

I am considering these for my surround L/R: Polk Monitor30 http://www.newegg.com/Product/Product.aspx?Item=N82E16882290200 (20-100w / 55Hz-25kHz / 8ohm / 90db)
And these for my subs : Klipsch Sub-12HG, BIC America F12 or Premier Acoustic PA-120.

I am primarily concerned with consistency in sound of my component speakers, so I will likely purchase the Monitor30's. They are going to be wall mounted, but I am concerned with their size and potential overkill considering the job of a surround speaker. I don't really care about my surround rears, and will either not use them or just leave the cheap Onkyo's that came with the HTIB.
I REALLY need help with the sub choice. I watch Blu-Rays and listen to music. I would like to spend $200 (BIC), but am willing to go up to $300 (PA or Klipsch) if it offers more flexibility between movies/music and higher quality.

I summary:
Are the Monitor30's overkill? I don't see a smaller wall mount option in that generation of Polk.
Which sub is the best budget sub to fit music/movies?

Thanks!

Those OMW3's are 50w. Wouldn't that create a conflict as I turn the volume up and the other speakers are able to handle the higher wattage (125-175w)?

I compared the frequency response between these three subs and the BIC F12 seems to have the widest range. They all start at 24 or 25Hz. Looking at the specs I can't see what would put the Klipsch worth the extra $100. It has a much larger peak power rating, but I'm not familiar with how often an amp goes above the continuous power rating. However, I also know that numbers can mean nothing in terms of performance. I've just heard a lot about the BIC F12. All three of these seem like good options, I just want the best of the three.

http://www.bicamerica.com/showpage.php?brand=2&type=8&spkrID=84
http://www.klipsch.com/rw-12d-subwoofer
http://www.premieracoustic.com/buynow.asp?action=detail&prid=1222&crid=195

Thanks for the sound advice.

I typically listen to music on the "All Channel" setting. So that will affect the 50w speakers then, correct?
In terms of movies, I have considered just leaving the surround and surround rear crappy little speakers that came with my Onkyo. Advice?

I should know better than to strictly trust manuf. ratings. Is that 10hz enough to justify another $100, or are there more reasons? I get moderate use out of my sub. The BIC F12 seemed to fit the bill at $200, but if the Klip is worth the extra $100, I can be persuaded. I just need a low-mid-range starter sub to wet my whistle. My setup is filling a medium room, and I want the sub to really shine in movies. The one that came with my Onkyo HTIB bottoms out all too easy on some film.
Edited by JustinRizzo - 9/1/12 at 7:56pm

Sounds good. The 10hz would be for movies, correct?
Also, for movies, what quality surround/rear surround should I desire? My understanding is that these channels are accent channels, and thus I wonder if Monitor30's would be more than I would need. I'm considering those OMW3's you mentioned, and wondering what the difference would be between the two. Thanks.

I'm excited to watch Inception with whatever upgraded sub I purchase, and I have noticed that in certain scenes I can barely hear the accent/surround sounds with the Onkyo's I currently have.
Edited by JustinRizzo - 9/1/12 at 9:28pm

What would the next step be over the Klipsch? I'm wondering when investing in a sub if its worth it to just go out with a bang for a long term investment rather than making several small investments in learning.

You've been a big help. I appreciate it thoroughly. I think I'll pull the trigger on the Klipsch tonight after talking with the wife. It should be a major improvement over the Onkyo.

In the mail. Got it off Newegg's eBay account for $291 ($6 in eBay bucks and another $3 off from my Credit Card).