If you have waited for years, then you have your answer. Go for it. If not you will kick yourself because you will have missed using it and the price will go above your means. Do it now.
Weighing in here as I feel like I’ve been in a similar situation. I used my high school’s M2 in photo class. It was heaven, kinda defined 35mm photography for me. Buying one was totally out of the question. So I settled for a long time with an Olympus OM1. Great camera and optics, but not a Leica. Along the way I tried a Contax IIa and a Contax G1. Finally got the M2 a few years ago. Should have buckled down and saved for one years ago- I enjoy using it so much. Comfort with your tools is a real thing. I would encourage you to get what you really want. Use the lenses you have now and try some others later if you feel like it.
Enablers both of you.