The second part is kind of along the lines of getting a full frame digital camera. I have had some of the negatives blown up to poster size and they look excellent (B&W's as that is what I mainly shoot). If a 35mm film camera is about equal to 8-15mega pixels, than the 5dMark II should be just fine as it should perform better than my film camera???
Earlier this year I did a comparison using the following:
film: EOS650, 50mm f/1.4, Speedlite 430EZ, Kodak TMAX 100
digital: EOS 5DmkII, 50mm f/1.4, Speedlite 580EXII.
Shooting roughly the same composition, the 5DII gave much better resolution (at ISO640) than the TMAX 100 black and white film did.
This was not a scientifically conducted test, but rather a subjective evaluation to satisfy my curiosity.
My feeling now is that you need to be really dedicated to want to shoot film.
Bear in mind that, as has been pointed out, film grain and digital noise are different in nature, which makes a direct comparison difficult.