If you want to see the original weight and balance sheet direct from Cessna for a Patroller see link below. The longest flight I've knocked out was around 5.25 hours. I regularly go around 4.25 hours.
Patroller Photos [
photos.app.goo.gl]
Also If you want Patroller doors, there's a guy on Instagram that converts old doors and also sells conversion kits. PM me if you want his contact info, I'm not sure if he's a member.