Honestly? I wouldn't wear it at a public family-oriented beach, especially not with your generous endowment.
You have a slick body and should be proud of it and show it, but IMHO there are more subtle ways to do that.
At a public family beach, you could definitely get away with a sexy light-colored Speedo. The chicks (and envious guys) WOULD notice your bulge but nobody could give you shit about appropriateness.
Obviously you can do nude beaches too. You'd probably be in the top percentile.