Food Truck Flooring

I'm in the process of converting a '65 P30 and am looking for suggestions for the flooring.  The current floor of the box is metal, but is not in the best shape.  There are a couple areas of bondo and some rough spots.  We've prepped the surface with a heavy duty wire brush and removed anything loose as well as most of the paint that was on it.  My thought was to go with some type of epoxy coating, but not sure if any would adhere well or be thick enough to level out the rough spots.  Interior height of the truck is only just over 6', so I need to be careful of reducing that.  Any suggestions?  Thanks.