Looking to purchase a used '04 a couple of Qs

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Hello. New to the forum. I am in the process of purchasing a used '04 X3. I know that most of you would recommend an '05 or later but the price on this '04 2.5 with 35k miles, nav and panaromic roof is too good to ignore at $22k. I have test drove the car and my only complaints are the rattles produced on all 4 doors. Quiet loud and quite annoying. From reading this forum I know that this is a known problem with possible known solutions from the service dept. My questions are to the people who had this issue: what are the chances that the door/window rattles will be completely resolved? If not completely resolved, was the fix(s) satisfactory? I guess my last question is if there's anything else I should be aware of or looking out for when trest driving an '04? Thanks for any input.