So if I wanted to run by the performance shop and ask them to cut out one coil and remove two leafs, is there anything else I'd have to ask them to do (assuming I'd get an alignment right after)? This would be a temporary setup until I could afford the TVS system. Other than ride quality, are there any big negatives on doing it this way?
If you have any other lowering mods in the back then you need to either take them off or remove 1 leaf.
If your rear is stock, then pull 2 leafs and get some shackles and put them on the 1'' setting. The fronts you will want either one coil out or maybe more. I bought JDM Spring that have 2 coils out for a 3 inch drop and the isolaters in.