If it was me, I'd remove xampp. But that said I've never used lamp/wamp/xampp before either, I've always configured each component separately.
Or you can configure it to listen on a different port in httpd.conf than port 80. Only difference is you'll need to either establish port forwarding or simply add the port to your address (http://127.0.0.1:8088/yourpaths
) for example.
Both are feasible, but I would say multiple versions of apache will just result in multiple pieces of software to keep track of and update. That's why I'd just use the one.