The thing I don't get about these kinds of build-ups is, why use a compact truck? It seems to me that the primary advantage of a compact truck over a full-size truck is that the compact is likely to be a bit more economical to run (i.e. better MPG.) Of course, by the time you load a thousand pounds worth of gear, jack the suspension up and put on big tires, you have lost the one advantage that the small truck offers because all of those things will cause your MPG to plummet.
I suppose a smaller "footprint" may allow you to go on more restricted trails but the difference in footprint size between an 05+ Taco and a full size Ford, Chevy, Dodge or Tundra seems minimal, at best.
So it seems to me that unless your purpose is just to show what you can do with a Tacoma, why not just use a full size truck, which is stronger, has a more powerful engine, superior payload, and is more rugged overall? I would think that something like a Ford or Dodge heavy duty truck with a diesel engine and solid front axle would probably be a much better expedition platform and probably consume about the same amount of fuel as this built up Taco.