Those two are not related.
If you have no current limiting device between your alt/VR output and your LFP, you can easily damage the former, put an infrared or other temp gauge on the hot bits and disconnect at 60°C or so.
And going faster than a 0.3-4C rate will hurt the longevity of your bank.
All this at low voltages, it's low SoC where the bank pulls the most amps.
I know current limiting and SoC concerns aren't the same. I think I have enough control to be reasonably certain the charge disconnects in the plan will prevent continuous charging at 100% SoC, and I'll check to see if they'll disconnect at a user defined charge rate.
Current limiting is another matter, and I'll be doing just as you said about monitoring alternator output and heat. With the battery at a low SoC, I could mitigate heat at the alternator by simply disconnecting alternator charging after X minutes to allow a cooling period.
Group speculation has been very helpful, but I think it's time to go forward with actual testing. I can easily add some form of voltage regulation to the circuit later.