2P4S vs 4S2P, and paralleling question

[Ryban]

I'm pricing and sizing out our new house bank. I like the idea of using the EVE Grade A 280AH cells, as they are affordable (0.11 $/Wh) and seem to be good quality.
https://www.18650batterystore.com/products/eve-lf280k

I'd like to build a 560AH bank with these, but am torn between making two batteries and putting them in parallel, or making one battery by putting the cells in parallel (which I've mocked up in CAD below).

The advantages of building the 2P4S bank:

• Simplicity
• < 1/2 the cost, since I would only need 1 BMS/Contactor/associated hardware (especially since I'm leaning toward the REC BMS)
• Probably more compact
• Potentially less issue with load imbalance if two batteries were used instead of one -- though this can be mostly addressed by making sure all external cables are equal length and the BMSes are identical.

The disadvantages maybe:

• Lack of redundancy, relying on a single "battery"
• Lack of redundancy, since only 1 BMS/Contactor will be present -- but I'd likely carry an extra BMS onboard anyway.
• Potential issues with cells not being loaded equally?

The last bullet point I have the most questions about. Ideally the resistance between the parallel cell terminals should be as low as possible.

Should I have the battery cables contact in the middle of the bus bar?
At the bottom of the photo, I have the positives of 2 cells connected linearly to the negatives of the next 2 cells, such that two terminals are closer to one another. Would it better to use equal-length cables between each of these terminals instead? Am I over thinking this?