This Busbar config ok?? (Pic included)

[Hedges]

on my limited knowledge, I think the daisy chain and busbars connecting to the batteries directly subject the battery terminals to far more amperage than they are designed for, yeah? This doesn't quite have to be tested to be known. but, in a low power consumption situation those ways may be fine.

I see what you mean. If stacked for amps not just Ah, which is likely.

Daisy chained through the two separate studs, current goes through whatever internal busbar; we don't know how big.
Ignoring the second stud and stacking lugs to daisy chain avoids that.