Northern California: Am I too fat for a 7ft board

I’m 45 and weigh 225, what kind of board do I need for Northern California. I live in Santa Rosa and consider my surfing beaches Half Moon Bay to Big River Mendocino. Small waves mostly. Should I get a Catch Log 8’. Should I get a real surfboard used on Craigslist? I am just getting back in after 10 year break, surfing mostly east coast Long Island, Rhode Island, Virginia Beach, Cocoa Beach Florida.