I don’t think it’s possible to come up with a “conversion”. Redpointing, in particular, is irrelevant since most technical alpine climbing will be onsight. And if your goal route is slabby M5 with no gear, that’s going to be a lot different than bolted M7. Addressing just physical capacities is only part of the puzzle.
I’m a big proponent of using sport climbing (including M-climbing) to develop technical skills, but on its own, it won’t be enough.
I’d recommend approaching it from the opposite direction. Put together a list of easier alpine routes that are similar in nature to your goal route and progressively tick them off.