Awesome! Sounds like you have done your research and I am looking forward to the results! I really enjoyed the 33"x12.5" tire days. I think you will be very happy :-) if you do end up getting the lower adjustable links I have a spare lengthened driveshaft I would not mind selling since I have the custom double Cardan high angle driveshaft currently installed.
Flipped ball joint is super easy and does help with alignment adjustments. Adjustable lower links and diff drop are the two mods I would suggest, but as others have already said not absolutely required.
Oh and what size spacers are you wanting? I might have some extra ones in the garage.