Help on choosing the right wiring kit to redo ALL the wiring in the car

IMHO

Painless is not.
EZ is not.

None of the aftermarket "universal" kits will be easy. And unless you are a wiring knoligable person you will end up paying someone else to finish it and that will double the cost of the kit.

Go with a factory correct harness it will just work. Plug and play.

M&H thru Year One.