Kodak OG 5.48 with 2 Lemoen Batteries

Good day All 

Would you be as kind as to assist.

I would like to double check some settings and make sure all is set up as efficiently as possible

System: 

Kodak OG5.48 ( Axpert VM III)

9 X 550W panels

2 x Lemoen Lithium Ion LIFE 5.12KWH 51.2V 100Ah

Settings:

I have 55.2 for bulk charge

53.2 for Float

Cut off voltage: 48V

-- Any advice on back to grid voltage settings?

Currently set to SUB

Charge priority : solar First

On this inverter would there be any advantage to move to SBU?

I would like to accomplish:

Use eskom as little as possible.

I kill eskom supply at 19:00 and run on battery at night.

@Coulomb your advice would be much appreciated.

Thanks in advance

Edited January 17, 20251 yr by Nightwing
Added images