hi all this advice is good one other thing you could consider is some progressive rated springs as they they get harder the more weight you put on then, but when the back of car is empty the rear springs go soft so giving a nice drive, also to combat the caster angle from when saff's are lower and wearing the inside off the rear tyres, like mine use to do there are some shims available by r&b that bring the camber angle back out and saves a fortune on tyres and also means more tyre contact and more grip
good luck ......