Sounds like a great list. I'm going to be replacing my head unit over the winter while it's in storage, and I'm probably going to go with a CDA-9813 or the one you mentioned. I'll probably get the 7995 because I'm using external amps anyway, so I'd stick with that HU if I were you. Pioneer isn't really crap, though. A lot of the guys are very biased towards certain brands even if they haven't heard or owned them. I used to have a Pioneer HU, but I just like Alpine better.
As for the front components, I run the CDT Cl-61 series and they're about the most natural sounding speakers I've heard, so you can't go wrong with the HD series (even though I haven't demoed them yet), and for an amp for these, I'd get an Avionixx AXA 400.2:
http://www.avionixxusa.com/ep/axa_4002.htm.
As for the subs, that's what I was going to run, but I want to save some trunk space, so I changed my mind. They're great subs, and you shouldn't have any problem fitting them. They have a lot of their stuff on backorder, though, you might have to wait. Not sure on the A-series, though, so you'll just have to check. For an amp for these, you could get another avionixx axt 1200.2:
http://www.avionixxusa.com/ep/axt_12002.htm if you want to keep the amps the same, or go with a JBL 1200.1:
http://www.ikesound.com/product-product_id/209. I'd go with the Avionixx, but the JBL is about $100 cheaper.
Sounds like you have a good system planned out, though.
I don't know if you have any links to this stuff, so here's what I could think of:
CDT's:
http://www.thezeb.com/caraudio/CDT_Audio_Components.html
HU:
http://www.etronics.com/product.asp?stk_code=alpcda7995&store=&catid=317