I saw those burners and blew a gasket. Is that Scuba Steves frame and not yours?
Electric will be nice. I used to finish concrete in the summers. One thing is the amount you need won't cost too much. The one thing is it will be really heavy so, maybe another set of casters under the middle. You can use that garage epoxy floor paint for color. Also, they make powder dyes to spread on top and work in when troweling.
Personally I would go to a home surplus and get a piece of cool granite that was cut wrong for cheap. You could make it look like the POL's. Good luck.