Well asking the same question over and over isnt going to get people to reply any faster.
Pump: The 350 is considerably quiter than the 650 and gives similiar performace, certainly enough for most setups. The Eheim is a very good pump but no better than the 350, the 350 is a very good pump. The Sticky with the best components listed agrees with me on this one. GPU is not the only thing to consider when looking at Pump specs, the figure provided is for no resistance, there is considerable resistance and distance in a Watercooling loop, often against gravity. So Pressure, rated in ft as head should be considered. The 350 has around 13ft head which is very good. The best price that I have found (I am about to buy this pump aswell) is the $69.99 at CrazyPC.
If you want to save some money on the Rad, as sunrunner20 said, get a Heatercore. A Dual Heatercore is usually plenty of heat dissapating power for any loop. But that is the lowest price I could find.
Are you good at making things or modding cases, if so there are ways you can fit your components in. What Case are you using?
With this setup are you aiming for the highest overclock, silence, or a bit of both? What components are you cooling?
Edit: Why would you want fan filters for a Res?