Custom Lift Support for Tire Carrier

On the right is the OEM rear hatch lift support rated at 194 pounds of pressure.
On the left is our HK Offroad Custom Made rear hatch lift support rated at 350 pounds of pressure, each.

We are going from 388 pounds of pressure to 700 pounds of pressure to lift the rear hatch.

Can anyone guess what we are planning on carrying on the rear hatch with that much pressure?