Not to bash, but you could have found that Alpine receiver for more then likely a cheaper price online. But regardless its not a bad choice. I do love alpine receivers.
I actually have that component set but the 6.75 series. db6750. They are a pretty good set of components but also.. they are definatly not worth what crutchfield has them listed for. I think I bought mine, which are more expensive then the ones your looking at, for even less then those about 2 years ago. I'm pretty sure you can find this set for around $100.
I recommend saving up a bit and getting something good. Or as the cheapest suggestion I can make for the best speakers. I would offer these..
http://www.infinitecaraudio.com/cgi-...atalogno=SSCS6
Have been reviewed with great results and and are well worth their money. If not those then I'd say Rainbow SLX line. But those are $190.
Also that scosche woofer is worthless... please do not buy it