A:AnswerI'm reasonably sure the mic and motion control are only within the remote (think wiimote). As for 2, likely, but you would probably be cutting yourself off from some functionality.
A:AnswerNot sure where you are located but in the Northwest suburbs of Chicago area the answer is "yes". You need a HD box which comes with the HDMI cable
A:AnswerNo many carriers are not 4K ready yet. Only netflix, youtube, roku , Fire tv, etc.
Just hold on to the TV, cause eventually you will want to go back.
A:AnswerYes a high speed DSL will fit the needs of most people. You can check with local Best Buy to see which services and speeds are best for your needs
A:AnswerI doubt they will, but my 55 in is basically the same size deminsion wise as my 50 in. flat screen, so the 65in. should be roughy the same footprint as a 60.