What else is needed in this audio system?

I am getting ready to buy a fairly nice system for my car I just need to know what amp and sub to get. I plan to get the Pioneer AVH-P5200BT flip out multimedia deck, Boston SR50 5.25' speakers for the front(with the crossover and tweeters it comes with) and Boston SR95 6X9's for the back. I want to buy an 8" sub(don't want or need a lot of bass) and an amp or two needed to complete this setup. And that is what I need help with, all I know is kicker is what I want for both. Things to know; this is all going in a 2000 Grand Prix GTP coupe, I'm not loaded so I'm buying piece by piece starting with the deck, I listen to classical, rock/metal, electronica/techno(sometimes.) Like I mentioned, I need help buying an amp(or two if needed) to support the Boston's and an 8" kicker sub, so what should I get that sounds good and doesn't break the bank? To be honest I don't plan to expand on this setup much if any at all so the amp doesn't need to be like 4 billion watts just enough to make it sound good and clean.