hey, I'm currently reading AK's installation thread and had some questions. If I dont want sirius radio and rear view camera, what parts do I need to purchase?

-Kenwood DNX6140
-Scosche NN04B 2007 - Up Nissan Radio Wiring Harness
-Scosche NAA2B 2007 - Up Nissan Versa Antenna Adapter

are those the only things i need to purchase? What do I need to buy if I want to use the standard steering wheel control (volume, track, etc)? I really appreciate the help