does the chime really mean that much to you? you can wire in a chime yourself or pay someoen to do that for you for like $30 bucks.
any HU will work fine in your car.
you can keep the steering wheel remote controls you have to buy a pac steering wheel adapter. $70 bucks
before you go and buy something talk to someone who knows about CA in person and not just some sclup who has a sub in their trunk. and crutchfield is the biggest rip off out there. period. to compare prices try woofersetc.com for instance pick a product and compare the prices at least 1/2 price.
if you want to learn go here and read for a few months: http://www.caraudio.com/forum/index.php