Mdinana - The drums will be stationary since they'll weigh 470 or so pounds each. Will be adding smaller Jerry Cans for transport if I need to leave the house.
Bacpacjac - We never go anywhere without a camera to take pics. The pond sinkage actually ended up with my fiance's high-end digital camera floating out of the Jeep in it's bag. It was okay after it dried but she was a little pissed. A friend had to take the pic with his camera.
NightHiker - Thanks man. Going tomorrow to grab a food-grade hose to fill the barrel with.
Just glad you've considered that already!
I once saw an ad for a pick-up bed water bladder. Something like 200 gallons. There was a tiny footnote - this weighs 1600 pounds loaded! Since then, I've kept an eye on weight distribution with preps. That'd be a rude surprise one day.