Hi, for your build, not only will you need a lot more efficient motor/propeller combo (definitely not 5-inch propellers), but you will also need to have way higher than double the AUW in thrust to fly efficiently, this is something I learned from my own builds.
For context, the reason DJI are able to get drones like the Mavic to fly for almost 30 mins is because they total thrust available is over 3 times the AUW of the craft. So, for 60 min flight time you’re probably looking at a quadcopter with 10kg max thrust and 3kg AUW, half of that being batteries.
Try and get the lightest motors, propellers and frame possible for this, a good place to check out would be the Sunnysky efficiency series motors and T-motor props. Good luck!