Then the Magene Base is figuratively made for that. Especially for "beginner bike mechanics". Easiest swap ever. Just remove your current cranks and install the Magene crank/PM. That's it, go ride, enjoy accurate power readings. No need to swap BBs or axles or single cranks that don't exactly match the other side or whatever.
You can even use your Shimano chain rings if you prefer them over the Magene.