Need Help: Buy New 5.1 Speakers and 3D Blu-ray Player for LED 3D TV

I have an year old Panasonic L42-ET5D 3D TV. I am looking to add 5.1 Speakers for surround sound. I have a Airtel Digital TV HD. I also want to buy a new 3D Blu-ray Player.

I want to output sound to speakers irrespective of whether I watch Digital TV or 3D Player Movie or USB Movie.

Can you suggest if this is possible? My TV has a Digital Audio Out [Optical] as well as HDMI Ports and legacy RCA ports.

It would be great if you can suggest compatible 5.1 speakers as well. My budget for 5.1 Speakers + 3D Player is Rs 10,000.

Thanks,
Ratul