Handling

[Cableguy]

Hi all, my van handles really badly. It's already been lowered, not sure by how much.
Cornering is an experience and any kind of small pothole etc results in a hefty jolt,
As it's the best part of 25 years old, it's a bit worn.
Been looking at the Brickwerks site, tempted by the h&r springs. Not sure about the shocks.
I guess it comes down to how much I want to spend. Trouble is, I don't know what I can expect with having it all replaced! Any help here would be appreciated ,
Also, when looking from the rear, the rear wheels have a lot of -ve camber, is this anything to worry about?