Should I sell my yesterday bought Tacoma already?

Are you thinking a gas or diesel truck? Both fuel options readily available? Diesel engines create more torque and may be better suited for your needs.

You mentioned making a flat bed and keeping the truck small enough for narrow roads. Would a 2 door long bed (8ft) full size truck fit the bill? Might not be much longer than the Tacoma depending on the model and might give more usable space.

Awesome adventure! Be safe!