If you are going to use the CM Stacker I believe you have a couple places you could install rads like the HE120.2 or BIP2. The front drive area would accept either and leave room for about 4 drives yet and the bottom area would also have the room for those or even the triple fanned rads also (you would have to have it on castors or small feet to give clearance for air flow tho) and with a triple there you would only lose 2 drive bays.
If you plan on using 3 blocks I would suggest a setup similar to mine which I use a 3 barb block(White Water or RBX) and run the GPU and chipset in parallel from the block to the res. Personally I would use the RBX w/#5 plate and brass top along with the SilverProp GPU and chipset blocks which would make a full copper/brass setup.
For the res the new Swiftech bayres looks like a very good way to go.
For the pump I would go with 1 or 2 of the MCP600/AquaXtreme 50Z. For noise vs performance vs cost I believe they fit best. Read Cathars post on
pumps
For tubing I would suggest spending the extra on the Tygon, it can make some pretty tight bends without kinking (for me it was the one from my RBX to the chipset block).
I hope this helps. I am sure you will get plenty of suggestions that will dissagree with me, but thats what this thread was for and the more ideas you get the easier it will be to make your final decision and get a good setup.