I have the Daystar spacers on mine. Looks great. I have heard concerns about the durability of the polyurethane, but damn they're substantial! I don't worry much about it. Time will tell, I suppose.
You will need longer shocks. Don't let anyone tell you otherwise. I got talked into buying the stock length shock with them, and they are just not long enough. I had to return them for 2" longer front shocks.
The install is easy. I did it without a spring compressor tool, but I would highly recommend finding one. It will make your life much easier.