The best I have been able to get it down to one M camera with 35,50,90.
One time a did a Rollie with 40 mm fixed. In college I had a Waltz Envoy with 50 2.0Nikkor fixed. Both drove me crazy.
So bad that when I graduated, I got a Pentax Spotmatic, 50 1.4 28,35,85.,135,200 all at the same time from Altman Camera in Chicago. I called up and Selwyn Schwartz took the order. I illegally parked on Wabash and just ran in to pick it all up. Better than Christmas.