I was setting up my closed GPU loop when I realized it wouldn't work with the CPU air cooler I had installed (Scythe SCNJ-1000)

. Long story short I have more parts for the rest of the system in the mail. Based upon years (literally) of research and the budget/ goals I have in mind, here's what I came up with:
Goals first (in order):
1. setup a system that remains enclosed within an Antec P180 upper compartment
2. create a system that rivals my air-cooled rig's sound levels, pre-x1900 (fairly quiet)
3. improve performance of stock x1900xt cooler and equal temps of SCNJ-1000 (CPU)
Cooled System Componentry:
CPU: Opteron 170 @ 2.4 GHz (29-48c)
GPU: ATi x1900xt (45-89c)
System Temp (on-board diode): 31-37c
Room Temp: 20-25c
Ordered WC Stuff:
CPU Block: D-Tek MP-05 SP LE (432 pin impingement) w/ additional restrictor plates for tweaking
GPU Block: Swiftech MCW60
Pump: Swiftech MCP350 (Laing DDC) + MCRES-1000 reservoir
Radiators: 2x Swiftech MCR120 Quiet Power
Can any of you out there give me some idea how this will perform, or recommend flow order tweaks? My current plan for flow is:
res./ pump->radiator (front)->GPU->radiator (rear)->cpu->res./ pump
Thanks!