The M2 is my favorite M, and a hell of a camera (my favorite is button rewind with no self timer...so clean and bare), but why sell everything for a camera that can be fairly easily obtained in decent condition for $600 or less? Work some overtime, and you can get one right quick! For $1,000, you can probably get a fairly nice one with a lens, *and* get it serviced. Just sell what you don't use and/or will never use, but don't sell everything. A Leica M is not worth it. If I had to have one camera, it would definitely not be a Leica M2. It would be a tough call. My IIIa or IIIc would be among the finalists, but I think I would have to go with something in medium format.
I have a suggestion: Try a Yashica Electro 35 for a while before committing to an M2. They are no more than $10 in most cases, give good image quality, and will give you a feel for a rangefinder. As added benefits, they are so cheaply made that they weigh almost nothing, and they are among the most silent 35mm cameras ever made. They also have a pretty fast lens (f/1.7), which you will have to pay through the teeth for with a Leica.
The whole time you are shooting with the Yashica, be saving your extra money. Then, after a while, if you dig the rangefinder and are still buggin', get the M2 with what you have saved! If you decide that a RF is not for you, then you are only out a fraction of what you would be out with the Leica.