The model just below the alpine that Natey suggested would be fine, I think...or even the 7995. Just install everything at once at you'll be all set.
You can also check out Eclipse headunits, and the Pioneer Premier line is pretty nice...they may not have anything you like for about 400$ though...
As for components, just make sure you listen to them first...I'm a big fan of Boston Acoustics' comps as well as the JL VRs.
For an amp, I highly recommend either the Alpine MRV-F340 ( i think...that should be 50x4) or the Eclipse that's in my sig, the EA3422. I love the Eclipse and it's an awesome unit for the price.
Subs...well...elemental Designs hasn't failed me yet...talk about great SQ!

'Course you'll need an amp for those, but that's all up to you...you can get HiFonics, JL, Xtant, whatever fits your bill! Just make sure the box is right!
Good to see you on here again, Matt...Happy Holidays and be safe.