Finding the right MPPT

Hello! I’m searching for the right charge controller for my system:
I have solar panels of 2400Watt and 48V batterys with an MPPT 100 20 (not tested yet).
Right now I have doubts about this MPPT that I bought. When i calculate which mppt I need, the result is 50A. (2400W/57,6V*1,2= 50A)

But the victron models that are available for 48V batteries are:
MPPT 150 45
MPPT 150 60

Would you go for the 45A, or the 60A model or keep the model I have now?
Thanks!!

Use the mppt calculator

Take the 150/45, calculated with 52v it is a pefect fit with minimal overpanelling