Am I making a mistake going with a heavier, thicker bumper?

I carry one bike on the front of my '05 Trail Cruiser. There is room between the batteries and propane fibreglass cover (not a slide over, actually attaches to the TT), the other is a fold up 12 speed from Camping World, just throw it the back of the Suburban. Just don't like bikes hanging off the back bumper where they can be damaged.