For all new upgraded brakes all around with new lines, hoses, master cylinder, harware.... between $1500 and $4000+ depending on how fancy your willing to get. A more cost effective option is just rebuilding what you have - A
new master cylinder, hoses, wheel cylinders, shoes, springs, rotors, drums, wheel bearings, seals, fluid, and rebuilt "loaded" front calipers could be had for about $550, assuming you are doing the work yourself. This may not be a terribly sexy option but you'll definitely be stopping better than most! BTW - Have you ever tried to bend stainless steel lines? Even with a bender it's NO FUN!!!