You will need a tuner that connects to your cable/antenna, and then the tuner will connect to the AVR via HDMI (or component, etc).
The AVRs you listed can convert both analog and digital inputs into a single HDMI output, so you will only need a single HDMI going from the AVR to your TV. You will use the AVR to swtich between the different sources.
I would suggest you first focus on getting everything done in your room (such as running cables, etc). AVRs only get cheaper with time, and by the time you are done w/ your room, there may be something better and/or cheaper.