Welcome Alex,
I also purchased a C model as my first plane, and I had about 160 total hours when I purchased it. I am the sole owner of my plane, and in the past 2.5 years I've added to that number quite a bit. It's been a great first plane (though it took a little bit to get used to-it goes a lot faster in the pattern than the 172s and Cherokees that I was flying).
I don't know of a good pre-buy location near Buffalo, but I would make sure that you go through a reputable source. I am also not sure if the pre-buy process is any different for a partnership. That's the kind of thing that one of the old pros like Hank can answer. I have heard a number of stories, though, of pilots (of any type of aircraft) thinking they were getting a better operating machine than they actually did. Most folks on this site will recommend a Mooney Service Center. (You can find MSC locations on the Mooney Aircraft site under Support.)
I agree with smwash02. If you keep your plane maintained well, it is an economical plane. I think 10K will get you quite a bit of use per year. I spent more than that on my first year, but have been significantly under in the past year and a half.
I have a 2-blade prop. To be honest, I haven't been in a 3-blade C, but I know it makes the nose a little heavier. That shouldn't be a big deal, though.
If you're looking to keep flying expenses under 10K, I think that a Mooney will help you do that better than a Cardinal RG. (I'm not biased, of course, at all.) You'll save quite a bit of money on just gas in the long run. Plus, a Mooney just looks better.