I'm sorry to be the messenger but a lot of folks just won't. I am not trying to be mean or anything but don't want to see you go down that rabbit hole when it can be avoided. Ultimately it is YOUR Pocket Book, Risk, Liability and the consequences over the long term, so it is entirely up to you. I've been here since the start of this forum and into solar etc (100% offgrid ++) for longer and it is a sad & terrible thing when someone burns up their battery packs for no good reason. BTW: I was a Heavy Lead (Rolls Surette battery bank) for years before joining the Bright Side of LFP.
Aside from selling the existing 12V packs, you can go a bit drastic, tear them apart and change them to 24V by combining the cells from 2 12V batteries so you have an 8S String with an 8S BMS. * THIS DEPENDS on if the Busbars are Welded or Bolted to the cells within the packs, AmperTime has used both methods in building their batteries.
The Victron will pull up to 125A to @ 24V and deliver 3000W + extra for surge handling up to 6000W or 250A draw.