New Car Speaker System?

It looks pretty good at this point. There are several things you might want to look at however. The first is that the amp you have selected has an RMS power of 60 watts per channel, and the sony speakers have an RMS or 70 watts. 10 watts might not be terrible, but generally underpowering a speaker isn't good for it. The last thing which you may already know and just haven't listed is that you'll need a wiring kit. I would suggest 8 gauge power wire for your amp. I only mention this because wiring can be a larger expense than you might imagine.