Just a small nitpick, but depending on your motherboard, it might be faster to use a dual channel kit if it doesn't support quad channel. Everything else seems fine, but you will have a hard time with the setup. Most likely you won't know until you try. Also, are you going single or dual pump, as that sounds like a lot of restriction for a single pump.
As for the power supply, it might need some extra support because of the length. If it sags on installation, then go get a cheap piece of foam and some dual sided tape to stick under it.
Hope to see pics!