I'd be really interested to learn more about the "mobile greenhouse where you can grow your own coffee beans. Do you have anything written up anywhere?
Last time I looked into growing coffee the summary was pretty much "yeah, right", so hearing that it's possible on a small scale is very exciting.
I highly doubt growing coffee on a small scale will work for this application. Coffee trees typically take 2-3 years before they produce first fuit, and they mature into very large bushes/trees. A young coffee bush might make a good decoration, but will produce few if any coffee cherries.
Last time I looked into growing coffee the summary was pretty much "yeah, right", so hearing that it's possible on a small scale is very exciting.