You can do:
-full doors metal doors
-soft (fabric) lower half doors,
-aftermarket hard half doors (different look than metal lower doors, so you might like it more)
-Aftermarket "trail" doors. This would be tube doors and things like that. Most don't include options for upper doors/windows, but some do. Tons of options here, including Bestop's Element Doors.
If you avoid metal half doors, but still want a fully enclosed cab, I think you might need to go with something like this: