What are your plans for wheels and tires? That's probably the most important factor for deciding what to do with the brakes and suspension. If you stay with 15" wheels that limits your brake rotor diameters and the tire choices that go with 15" wheels will probably reduce the amount of work you need to do to your suspension.
As for the TVS kit, I wouldn't say it's "too much". But it has stuff most cars don't need (like the heim jointed steering links). And it has other stuff you probably don't want on a street car (heims on the UCA's). And it's missing some really important stuff, like torsion bars and shocks.
For what you're describing I'd rather have QA1 UCA's, they have additional built in caster and they’re bushed. If you’re going big bolt pattern anyway then you’re swapping UCA’s or running adaptors anyway so I’d just go with the tubular uppers.
DoctorDiff has all the 73+ disk brake conversions, it’s a good way to go BBP and you still have OE style parts. You can go with 11.75” disks and still run 15” wheels.
PST sells 1.03” torsion bars and there’s a FABO discount. I wouldn’t run anything smaller than that anymore. Even the 1” bars I ran for a bit with 225/60/15’s on my Duster were pretty soft, lots of body roll still.
You can get LCA boxing plates and other nice goodies from
@BergmanAutoCraft depending on what you want to do for the other suspension bushings.
