An electric heli is not going to have a husge load capacity... the battery is quite a load already.

A glow powered heli's load capacity is increased dramaticly just by going to a larger engine. A typical .32 class heli can hover and fly on as little as a .25 size engine (and that's all you'd get out of it) put the recommended .32 in, and it can do aerobatics or carry several ounces of load (such as a camera) go to the .39 and it can really perform high load 3D stuff... of carry a couple of pounds of stuff.