1) The springs will settle a bit over the first few days. There's a chance you installed the rear springs on the front end of the car (and vice versa), but I doubt it.

2) Define "worse". If you were looking for a very soft, compliant ride... you're driving the wrong car. Sell the DC4 and buy a Buick Regal.

3) Alignment makes no difference on impact harshness. If you're annoyed by a rough, bumpy ride... then you need to reconsider your priorities.