I think Logitech makes the best peripherals, wireless or otherwise. They have wireless KB/mouse sets which are very good and very responsive. You do have to replace the batteries as with any truly wireless equipment, but they're still all around good for that type of hardware.
I wouldnt use a wireless mouse for gaming because in my experience they are heavy however people prefer them because you have more space and your mouse can move freely without the cord. The weight is still a big no no for me i'd recommend trying one with a game before purchasing any.
The surface is fine for normal activity but if you have a big screen you may feel a little cramped I imagine. Haven't tried it so I can't be sure. I don't have a mouse pad, don't see the point of 'em for optical really.
My desk is metal so i dont fink id like feel of it moving around on metal with loadsa little holes in it. But yea i know what u mean bout feeling cramped, wish i coud sumhow try it out!