I want to start from scratch on front suspension install. Order of operations

1- The QA1 strut rods should be cycled through their full range of travel (bumpstop to bumpstop) to check for binding and then adjusted so there is no binding. I’ve found that the best way to accomplish that is with the LCA, spindle, and UCA assembled (spindles and ball joints attached to the control arms), but without the shocks, brakes etc. Basically you want the spindles and control arms assembled as that effects the binding, but leave off the shocks and any heavy stuff so it’s easier to cycle the suspension through it’s range of travel and detect binding. I also do this with the torsion bars installed, but the torsion bar adjusters removed.

2- Torsion bars before shocks. You may also find it necessary to disconnect the LCA from the spindle to get the LCA in the right spot to install the torsion bars.

3&4- this depends on the bushings. For rubber bushings, the LCA pivot nut needs to be torqued with the LCA at ride height. You don’t necessarily need weight on the LCA, but you do need the LCA in the same position as it will be at the final ride height. If you don’t know where that is, you’ll need to set the car down and make the ride height adjustment.

For poly or Delrin bushings you can torque the LCA pivot nut with the LCA in any position you want. Those bushings rotate on the LCA pivot pin, so the position of the LCA when the nut is torqued is irrelevant.

4- poly vs rubber depends on how the car will be used and your own preference. Rubber does not need servicing, but the rubber bushings currently available aren’t that great a quality so their fit and longevity is questionable in my opinion. Poly bushings require lubrication, so they should be installed with greaseable pivot pins and will need to be periodically lubricated, just like ball joints and tie rod ends. You already have adjustable strut rods to make sure the length is correct to place and control the LCA with the poly bushings. Your other option is Delrin bushings from @BergmanAutoCraft, which are made from a self lubricating material. Both poly and Delrin require a more accurate strut rod length than rubber, since they have less flex.