Usually this question is asked in the other direction (freshwater tackle used in saltwater). Absolutely no problem with using a saltwater reel for freshwater fishing. Less maintenance, less corrosion, etc.
If you're fishing for stripers/hybrids or big catfish, an Ambassadeur 7000 series reel would be plenty big and hold lots of 20# mono.
You should get a ticket just for punctuation. What adult types like that?