Can I use a 75W and a 25W speaker with an 80W amp?

I know that the two combined is enough, but on celestion's website it says that each speaker in a 2x12 should be at least half the amp's output rating. If I were to use a Celestion Greenback and a G12t-75, would I risk damaging the greenback? It seem's like a silly question, but I figure I should know before I try it. And I know it's the impedance that matters more than the wattage, so a simple answer will do. Thanks in advance.