How much do you want to spend? Polyu bushes or coilovers, control arms, rear camber arms, anti roll bars, adjustable anti roll bar links and bushes for all of them?
With suspension it doesnt really work like that. What do you want to do and how much to spend. E.g. ARBs will make the car flatter when cornering giving you more confidence. Generally harsher when going over bumps. I dont have coilovers but I should have but with lowering springs the car is lower, looks better and handles better but again its harsher ride quality plus you need rear camber arms and front control arms to bring your suspension back to oem geo if you want that.
Poly bushes would be your best bet but they will only move the weakest link IMO