I'd love to be able to give you my superfluous Kali, but I can't.
Honestly I think a decent chunk of that is fucking type resist. Ra (or I should say, my Ra build with Ra/Kali leads) does not have tremendous damage honestly. It's good damage, and consistent, but off a lot of Kali boards it just barely one-shots bulkier enemies. If I wasn't arbitrarily immune to type resist I think that kind of thing would be a big problem for me.
Maybe this is poinless, but have you considered a Horus/Kali team? Kali still does decent work with red TPAs as a lead. I don't know if your colors are set up for it, but if Horus is anything like Ra you want a Kali active more than you want a redundant Horus active.