Hi
If you use a heavy tripod >90% of the time you need the Zeiss lens it is a statement lens, wiping the floor with the Leica equiv.
The little LTM CV is super for street shooting the click stops allow a scale focus without distracting nervous subject, the kit includes the finder... The M version does not come with a finder, more $. The optional hood make a difference...
The Zeiss lens is really big but not too heavy.
Any finder shiuld be ok, they are easy to lose get the cheapest.
Noel