That stator will work fine. It’s a shame you didn’t know this before, you could have bought a 3 phase high output stator and regrec and never had another battery
issue again. The nice thing with the 3 phase kit is you reach max output at 2000-3000 revs, with single phase I believe max output is something like 5000+ so unless your giving it some you don’t always meet max charging capacity. However you should still be fine with the RM23 which you’ve linked there. It’s still better than stock.