You should be fine as long as they're bridged. I myself would rather just have a straight up Class D sub amp. That's what they're designed for. You don't need 2 channels for subs really. You can't tell the difference anyways with frequencies that low.
If you run both subs in stereo, it will work, but not as loud as you may like it. The amp will not run 2-ohm mono stably if you bridge both channels to run the subs in a parallel fashion.