Don't go Kmac springs, they are crappola i assure you - crap core material and very old basic design that usually leads to either coil binding or untrapped coils at extended length

My honest opinion about coilovers is that they are too hard for a daily driver with a strong chassis - DC5 will be quite firm on crappy Australian roads. Plus, unless you put very good tyres on your car you are wasting the potential handling improvements a coilover kit can give you.

Your budget and your driving priorities are the main deciding factors here.

If you still can't deicide, find someone with the same car and a set of coilovers (a kit that fits in your budget range) and go for a drive on roads that you drive daily, that will tell you whether or not you will like coilovers.

Kings are a good option for someone that simply wants to lower their car for looks and a small increase in handling stability.

If you decide later on that you want better handling again, sacrifice your ride comfort and go with a decent set of coilovers, or invest in a set of Koni's that will give you excellent handling and still retain quite a bit of ride comfort