I'm not familiar with vedana but I think you absolutely can note that as Feel In if an external stimuli create an emotional respons. Shinzen even suggest that you can use external stimuli, for example watch TV and notice Feel In or any of the other Focus In methods as a way of practicing.
About your second question Shinzen writes " If you are without emotion or you have emotion but it does not involve your body, note that as "Feel Rest" and focus on the fact that your body is emotionally peaceful."
Edit: Oh, and by the way, Shinzen has changed the way he teaches labels. Of course you can still use the old ones if you are used to that but the in the new way he uses Feel, Hear and See as a base, and then you add if it's In, Out, Rest or Flow.
For example Feel is Feel In, Touch is Feel Out, Peace is Feel Rest.
Terminology and Gameboards