2. I'd use the same value as would be used for a similar cathode follower circuit.
3. Yes, the output voltage swing will be the same as the anode voltage.
- The source resistor could be two resistors but then you have lost the low output impedance of the source follower. To attenuate with low output impedance the anode resistor could be split and then buffered by the source follower.
4. Output impedance is ~1/gm