2500K should be plenty and 2000K will probably work too. Edible Landscaping was made with Hypercard, as a standalone application. It does not require Hypercard, or Hypercard Player, as a separate application. It will work on any Macintosh. It does require 2.5 MB of available RAM and 7 MB of diskspace.
Detailed instructions are available from within the Edible Landscaping software.