Well first off, don't drive in 4wd on dry pavement, water or wet is not good
either but it's better, you want the tires to slip some to prevent binding and
other driveline problems.
With this type of setup you could remove the CV axles and drive the truck without
them in place, but your bearings are shot, and the blue spindles are suspect, so I
would start by replacing anything that is discolored severely.
You need to remove the races also, always replace both parts when you do bearings.
Hand tight like you said should not be heating up like that, so there are friction
problems in there and it's the bearings and races. Also the spindle should not move around
like there is a worn part, make sure the strut bolts are tight, the only other parts that wear
is the lower ball joint, or the taper in the knuckle is roached out and the knuckle is junk, the
spindle also is bolted to the knuckle, so check those bolts too, they are the ones that hold
the brake backing plate on.
Explain the front wheels shaking with the e-brake on? this 4wd system wants to drive the front
and rear drive shaft at the same time, there is no center diff.