Complete or partial harness swap for 2001 mountaineer v.8 auto trans (doner) to 98 ford ranger 2.5 manual trans (project truck) 2wd as well!

[Lil white lightnin]

My question is would it be better in the long run to just replace entire wire harness system from my ranger with the complete harness and fuse blocks /relays etc .from the doner 2001 mountaineer, that way i can keep all the extras wiring simple like upgrading my now tc manual windows and door locks to electric. And stuff like that, just curiouse becouse im even thinking about cutting the electric moon roof out and putting it in the ranger..lol along with elctric seats and on board message center! To much? Or worth it? Thanks