I fitted a Victron BMV to my Dufour 40P and was really pleased with it. I did the same with my 450GL and added a battery temp sensor. If I was doing it again I would just fit a Victron smart shunt as I never look at the BMV display and just use the Victron phone app.
I would also buy a hydraulic lug crimper as you’ll need to modify the negative cables in order to insert the shunt.
I now have a Victron 240v charger and solar Mppt controllers which are networked to the BMV for more efficient charging. If you want remote monitoring you can finish it off with a Cerbo GX but will need access to wifi