A few friends and I are underway designing a senior project. We are looking for ways to make our product cheaper, and of course it comes to our most expensive ic components. We haven't gotten very far into the development of all the desired communication schemes, and I'd like to take a lot more time into researching the best approach rather then delving into writing code for a chip I wont use. I'm looking for the cheapest way to get wifi, ethernet, and Bluetooth capabilities. I'm also interested in PLC (power line communication) and AM radio though these are bonus aspects if you will. All things, considering time is a cost as well, I don't mind putting in the effort to get a cheaper final solution. This could very well turn into a long journey, but so be it- just looking for some guidance in the best way to progress forward.
Note: I'm not looking for a panda board or arduino packed with sheilds... I want some IC's such as WIZnet W5100 (for wifi) or TDA5051A ASK power line modem (PLC)...but I'd love one package...or some suggestions!