Those are all pretty easy DIY jobs. The rear brakes were a breeze on my old 190e. Search this forum and it shouldn't be a problem. Good luck to you.
1994 C 280 117.5k, White (Good as new)
1997 Toyota Camry 149k Miles (Not so pretty anymore)
1990 190e 2.6 95k (Sold-Should not have)
1981 240d Stick ??? Miles...sold