The picture settings do vary by such variables as color of the room, ambient light, and size of the room. So not one calibration will fit all needs. That said, many people do post their preferred or "ultimate" settings at the C|Net HDTV Picture Settings Forum.
That can be found here:
While the Blu-Ray player is wireless, and you noted correctly that the television is not, data is not transferred from one unit to the other. Both the Blu-Ray player and the TV would require their own separate connections. If you'd like to use the television's Internet@TV functionality, you'd need to either connect wired directly to the router, or purchase the Samsung WIS09ABGN LinkStick for the Wi-Fi connectivity.
I have just bought a UE40C7000 3D TV and BD-C6900 3D bluray player.
Could someone please let me know the optimum picture settings for this TV please?
Also I want to connect the whole system to my broadband wireless router. The bluray player has wifi built in and has connected fine. I particularly want to use the Samsung feature internet@tv which I can access on my tv using the bd player as source. Will this give me all of the features without the need to buy a wifi adapter dongle for the tv, which does not have built in wifi?