Q&A for How to Lower a Car

You should follow the instructions listed above.

Yes, just get coilovers. That way you can adjust the height to your liking.

Cutting the springs on a vehicle will put too much stress on the shocks, which can cause the shocks to break. Spring compressors will lower your vehicle, but if the spring compresses too much, the compressors will fall off. If you're going to lower your vehicle, do it right, and buy a new set of springs and struts.

It would probably be difficult, that's a pretty low expectation for a seat. If you are going to go to the floor (slam it), then get air suspension, as having your vehicle statically at such a low ride height can damage it in the long run, and you will have trouble getting anywhere that's not flat.