I. Maybe LongBox is added as an update soon. We never did hear if the deal fell thru
II. Outdoor quality of LCD is still to be verified, so you can wait for reviews before you order yours
III. Zip files can be opened using Astro file manager in Android besides many other apps
The beauty of this thing is that it seems to be opening all Android phone apps with ease and without issues of form-factor or screen resolution... so if you can find any Android app for your purposes you are good to go.