What, Amy could not get it to $1234.00 LOL ? Gosh Dang It !
You do not have to worry much, just the patience factor will test ya, darn slow boats...
You will want to get your hands on a good Bench Power Supply to Top Charge the cells to 3.65V and then to Top Balance the set prior to assembling into a battery pack. I am going to put this "blunt", do not piss away time with a 10A or 12A charger. It takes a LOT to charge these things... a 280AH EVE from 2.60V to 3.65V takes 12-14 hours with a charge starting at 40 Amps ! for ONE Cell.
I am attaching the Preliminary version of the: Luyuan Tech Basic LiFePO4 guide V1.0a.pdf which will likely cover most of your questions. I hope you find it helpful. Amy will have this available on the Luyuan Site along with more as time goes on.