recommended amp and box for sub?

I just bought 1 jl 12w3 and now I need a good amp to make some loud bass. I don't want to spend too much, no more than 300. What should I get?

I also need a box, but I'm not sure what to get either. I listen to hip hop, but I don't want to make the neighbors complain, just loud enough to hear from a couple cars next to me. Is one jl 12w3 good enough?

Oh and one more thing. I have an aiwa cdc-x217 and I know it isn't great, but how am I gonna install the sub if I could only find one pair of rca outputs in the back. I've also got 2 pioneers up front and 2 rear. Sorry for so many questions, but I searched the forum and I couldn't find a specific answer.