I’m in the midst of SLOWLY upgrading my suspension using a list pretty similar to yours. As it is not done yet, I can’t comment on what worked well etc.
However, I would definitely consider the front A-arm bushings. It is not at all uncommon for the bushings to have sagged enough that the torsion bar starts to rub on the cross-member. Many people have posted photos of this. Left to progress, it will put a groove in the torsion bars that will be a stress riser and ultimately may lead to breakage of the bar.
In my case (~100K miles, 1985 Carrera) I did see that this had happened and ended up sourcing a pair of replacement bars just to be sure.
My list (FWIW) is:
Rear trailing arm bushings (OEM)
Elephant Racing rubber OEM spec bushings for front A-arms and rear spring plates
OEM stock sway bar bushings
Ball joints
Turbo tie rod kit
Bilstein HD front / Sport rear
Wheel bearings all four corners
I am also rebuilding the brakes while I am at it
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