weight

Greeting folks, So I have my gigantic dometic cfx3 75dz on the passenger side.. dry it's 61 lbs, full of beer and food I imagine 100lbs. I want to install a yakima road shower (7 GALLON) on the passenger side on the bed rack, dry 25 lbs, wet 85 lbs. So with a total of 180 lbs extra on the...