m42 to ef to mft?

Hi!
Appreciate any help you guys can give me on this.
I´m planning to buy a BMCC 2.5k MFT.
I have a bunch of different mount lenses for my 7D (m42, ZF, PK). I have the corresponding adapter for all of them to fit on my 7D. My question is: should i get a simple eos to mft adapter and use both adapters together?
Will that give any infinity focus issues?
Thanks in advance!
Appreciate any help you guys can give me on this.
I´m planning to buy a BMCC 2.5k MFT.
I have a bunch of different mount lenses for my 7D (m42, ZF, PK). I have the corresponding adapter for all of them to fit on my 7D. My question is: should i get a simple eos to mft adapter and use both adapters together?
Will that give any infinity focus issues?
Thanks in advance!