I'm a little worried that you aren't fully aware of the costs of shooting 35mm or even 16mm... Usually to buy 120 mins (or 10,800ft) of 35mm film it's $5,500 just for the film stock and another $3,780 to process and telecine it. Unless you have an insane deal on the stock as well as processing, I don't know if I would risk running that amount of cash through a camera that hasn't been fully checked out. I would spend a little bit more money and buy a 16mm bolex from a local camera store or university that has been checked out or at least used by someone you know, and shooting 16 will still be expensive but not nearly as much of an investment as 35.