My guess is that it will work perfectly fine. Imation CD-Rs are made by CMC, and I have some old 40x SpinX CD-Rs (made by CMC) that burn fine in my 52327S at 52x. The quality isn't great with firmware QS08, but it is fine (C1 Max=26, C1 Average=1.773, no C2) with firmware QS09.
At the very end of the burn (if I burn a completely full disc), Smart-Burn forces the drive to slow down a bit, but based on my KProbe scans, this doesn't affect the burn quality much if at all.
Then again, the only discs I've burned at 52x where this doesn't happen are my TDK 40x discs (which are made by Ritek).