Thankfully Lauren was persistent at encouraging me to convert. So thank you Lauren. I received my 100 aHr kit today and so far I'm very happy with the service, price and quick delivery (6 days - the lead time for Ali-battery-baba was just to much of a deterrent.
I'm sure I'll have a few questions along the way. Lauren has already made me comfortable about the tasks before me. A bench power supply will be here in a few days. I chose to go ahead with that as my brother and son will likely replace their AGMs and when they do I can help them or borrow the PS for their use.
I'll document the build and install but it won't be for a week or two. I'll do it like Lauren did his LiFePo4 "recipe" he recently posted. I am as green as they come in the this battery building world so don't expect much technical blabber.
I am not endorsing this supplier but the question will inevitably come up. This is a 100 aHr kit with BMS and low temp protection. It is from batteryhookup.com. So far I've only asked one question via email and in less than 24 hours I knew the batteries are not top balanced. Their web site points you to Fakebook for tech advice. I'm not on there and I prefer tnttt. But I'm glad they were OK with email.