Calipers and rotors should be around $75 ea at best and decent pads for ~$50 - it is an easy job - I taught my 55 yr old brother to do it on his infiniti. The shop wanted over $600 to do it, we replaced front rotors, calipers and pads for under $300 in about an hour.
Be sure to clean and lube the pins the calipers float on so they don't stick again - same thing happened to me. Radiator flush can be done at home, bearing repack / seal replacement is a little tricky but there are instructions on 4x4 wire that help and I certainly wouldn't pay that much - grease is cheap and the seals only cost $8ea at most.
Brake fluid flush is a good idea but you can do it yourself with a buddy or by yourself with http://speedbleeder.com/ products
Call me when you are doing any of this and I''ll walk ya through it.