Not having replaced anything but pads makes me a beginner. My old (new) 240 brakes pulsate like mad which tells me new (or rebuilt) discs are in order. I tried replacing brake fluid but the front bleeders are broken, which indicates calipers. Should I replace the hoses. What about front wheel bearings?

I'd appreciate a few recommendations concerning proper replacement parts with a modest emphasis on cost. Thank you in advance.