In my experience I've found that microsoft antivirus is really all you need, maybe mixed with Malware bytes to do occasional scans. I mean, who knows windows inside and out and knows exactly what should and shouldnt be done internally better than the people who developed it? Plus, Microsoft teams are incredibly technically savvy and know what they're doing when it comes to security. I'd say just go ahead and use Windows Antivirus & get malware bytes to do occasional scans.