help chosing a charger

Hello,
I finally have my electric ford ranger ready, well, almost.
I am waiting on the batteries because I need a charger first.
I am hoping someone can help me chose one.
The truck will have 20 US-145 golf cart batteries(6 volts) for a total of 120vdc, the old charger was a bycan 120vdc 25amp. I am thinking about getting the same, but I just wonder if there is a better choice.
Also, I am wondering if it would be better to have multiple chargers, instead of just one for the entire pack.

Thank you for all the help you have provided.