I have recently seen the Speedpad n52 and been very amazed by what it offers.
The problem is that it's only for the left hand and I am looking for a gaming mouse with the same features (mouse, button(s), mounted keyboard) for right hands.

Does anybody have a suggestion?

the best gaming mice are the logitech mx series
i have the mx500 and love it
8 buttons
tough rubber-like material
extremely fast and repsonsive optical engine

the mx510 and mx700 are good too, and the mx700 are wireless

most people will tell you that the logitech keyboards kinda suck though
they have this damn function key you gotta push
anyway, i like my ancient dell quiet-key cuz its cheap simple and i can give it a beating in frustration without having to worry about it

common sense isn't very common