Dude thats an intense rig for your lights. You could have used HDRi on it or if you aren't comfy with Mental Ray a 2-3 light set up with raytraced soft shadows would have done this no problem.

As for the look the edges could do with a good bevel for starters and I'd personally lose the floor, wood like that is just too cheesy, maybe just float the logo in black space but i you want a reflection just add a reflection map as already suggested.

Cheers
Jay