I would replace the o-rings in the rear high pressure oil rail plugs. If not, the second you get your transmission back in, they'll start leaking. Murphy's law. Triple check for exhaust leaks. You'll never have a better time to put in donuts or a bellowed up-pipe. Other than that, you should be good to go.
Replacement O-rings for Ford Diesel Engines
Replacement O-rings for Ford Diesel Engines