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It's hard to evaluate. As long as you haven't lost any material from the existing prop, it should still be in balance, so it won't hurt the motor to run it. Make a test run and see how it goes, then evaluate your options. Of course you'd want to try a range of RPMs, and be alert for any vibration or other misperformance.

Presuming it works OK, I'd stick it in the spares box and get a nice stainless - no sense burdening a brand new motor with yesteryear's technology. Stiletto Advantage in 13.25x13 should be about perfect for that setup.

Tim