You could make mad power with 10k
Why not go with forced induction? when done right a safe boost level can give you many miles of reliability… save the rest for what ever lets go… Trans! But you’re going to get that with any level of power over stock.
Another thing you have to ask your self is what do I want out of the truck? Set some power level goals and see what options you have to reach these? Cam, heads, more ci, fi or all these things