Converter Questions - Replacement and want to charge faster

If you have the space, I would just add a new "stand alone" PD9245-60,(45 amp max on a 1000 watt genset) near the batteries, and myself, I would chop the ac wires to the wfco, and use them to power the new PD,.....or if too far away, run a new ac circuit to the new converter. Leave the disconnected wfco alone, use as a stand by if ever needed.