I plan on replacing the front brakes and also the wheel bearings, due to an increasing rumbling noise. Should I line up a machine shop before hand to press out the races? What else might be difficult? I'm not sure what to expect with the MB (I've replaced bearings on other cars) but I want to minimize the surprises, since its my daily driver. Otherwise I can let a shop do it, but I would rather do it myself.

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1985 380SE Blue/Blue - 230,000 miles
2012 Subaru Forester 5-speed
2005 Toyota Sienna
2004 Chrysler Sebring convertible
1999 Toyota Tacoma