You will not be at all surpised to learn that not all 1066MHz FSB motherboards support quad-core processors, although most do.
The P5N-E SLI does support Quad-Cores, but, like all the NVidia chipset boards it doesn't clock them past 315FSB or so, which is a fairly pathetic overclock. I wouldn't get a P5N-E SLi unless you need SLi as it has various issues that make it hard to recommend unless you need SLI or 2 PATA IDE ports.
Your wish to have on-board wireless limits you massively, and the handful of boards that do offer wireless usually are only actually bundling a WiFi riser card rather than true integration onto the motherboard.
The safe choice is going to be something based on the Intel P965 chipset and the P5B is a good safe choice in any of it's many forms (I think there are 9 different P5B motherboards and the P5B-Deluxe WiFi AP Solo is the most expensive!)
If you bought anything from;
ASUS P5B (take your pick, they're all good, but some are better value than others)
Abit AB9 QuadGT
Gigabyte DS3P (loads of people have these, but it's a classic and you'll get lots of help if you get stuck)
And paired that with any PC6400 RAM then you would get 2.8GHz almost guaranteed from your E6300 and maybe a bit more (3.0-3.2GHz isn't uncommon with Crucial Ballistix PC6400 or Geil Ultra PC6400). With the 965 boards it's the RAM that will hold back the overclock, not the CPU as the CPU will invariably do 3.2-3.4GHz if you have the patience to tweak it.