NEW Kyb shocks on prodrive/eibach springs whitline drop links, do that first to the classic. Then worry about re-bushing everything afterwards
If you go much lower or go down the coilover route then I would suggest roll centre correction but not the full bump steer kit as the white-line trackrod ends are crap compared to the standard items, just my 2cents.
Don't overlook engine mounts! Hardrace do these and are about half the price of the equivalent subaru GroupN numbers. (no more unsettling the car mid corner shifting
Speak soon matey