We are still talking about a frame with a 41mm bottom bracket shell. 3 bolt 29mm axle is a dead end system, if you don't have a 46/47mm bb shell.
Bro, there are
24mm steel axle 3 bolt cranksets available on the market. As it stands, 3 bolt cranksets are perhaps the most prevalent and price competitive option in the Chinese crankset market.
This isn't a complex scenario. Either
A you prefer a fixed PM+crankset option -or-
B you prefer the flexibility of a versatile PM+whichever crankset. Only reason I even mentioned this option is due to people who've been bodging their PM from the PES crankset and moving it to something else. They could have just bought the stand alone unit in the first place.