If you had a one piece transfer case behind the Toybox already, theoretically, you should be able to swap the necessary gears into the Orion and bolt it up.
Whew! After my dumb question in another thread about running a rear diff in the front, I thought maybe I was losing it 😁
Option 1 would seem to make it all fit, no?
For the front, staying Toyota, you're limited to 40 or 60 series. Unless you don't mind using a rear diff in the front and running on the backside of the gears. Others would know if there is a significant strength difference running them that way.