@lencap
maybe some aspects to think about:
If you wanna by a brad new one, you really need oxygen!!!!!
Also if you by the actual modells 2. hand, you will find out, that especially the mp is the most high price M camera at the moment (beneeth any of the collector stuff...).
But there are other possibilities - the M6 was never as cheap as at the moment - the 2.hand market is full of different M6 modells - if you do not need the ttl M6, you have a great chance to get one under €1000,-.
Another idea is the M4P, not so much loved by the leica freaks (don´t know why??), this cam lacks of a integrated meter, there is a coice to get a leicameter MR, but keep in mind, check it bevore you by it, many of them do not work properly - and you need weincell batteries.
Or you by a seperate meter, leike the classic seikonic.
Don´t by all lenses at one time - you will find out, that there is no other camera system, where you have to get used to the special character of the cam and the lens.
You have to imagine more things as your rangefinder shows you - and this is with one lens at the beginning difficult enough.
Buy a 50mm cron or lux and learn to imagine the depth of field, the perspective, the exact framing, the speed of focusing and apperture/ speed setting.
If you developed as an expert with the 50mm, buy the next lens, I would go for a wide angle like a 28mm or 35mm - now it starts from the beginning.
Try to bring out the same imagination with the wide angle without loosing the 50mm...
Than you need additional gear:
1. A bag, which is made for one or 2 bodies and 3 or 4 lenses - and it has to be well organized, because you don´t have a zoom lens, so a change of lenses should go save and fast - try it in the shop.
2. A lightweight tripod and ballhead.
3. Try to find your personal favourite film.
If it is B/W - DO IT YOURSELF - no standard lab will give you the quality an M system needs to bring out what is packed in - especially the extraordenary lenses!!!!
With every investment you do, you will recognize, that it is nearly everlasting stuff, what I try to say - with an analog M camera, you choose a system which is always in its special way up to date - you never feel that you need a sort of update - maybe another M???
With a medium format in addition, there is nothing in the analog world you need ...
There you can choose a classic TLR from Rollei - fits perfectly to your M - two silent cams!!!!.
A Mamiya 6 or 7 is very interesting if you can´t live without a rangefinder - and of course the hasselblad 500 series - I don´t like it so much, because it is heavy and I hate the magazineloading procedure...
Greetings Ekki