That wont matter, you're good keeping it that way. Loop order will not have a big enough affect on cooling to warrant taking it all apart. If anything, you're getting the slightly cooler water from the radiator directly in the cpu.
- - - Updated - - -
In fact, mine goes pump > radiator > gpu > radiator > cpu > res. Not only does my water go directly from cpu to res, but most people like the cpu before gpu. But my tube routing was cleaner the way I have it, and that's more important to me than 1 extra degree.