Can I fly a small RC plane there there? And what would be the less crowded times?

I have flown rc planes at the West side near the coast guard auxiliary on many occasions without any problems

Many large sports fields that make flying small planes very doable. I've seen remote planes flying at GT Bray complex.

I have not seen a policy posted visibly that bars the flying of RC planes. For less crowded time, I would say try during school hours during the day. Have fun!