Smart BMS Questions

[Bruiser Smith]

I converted my pack to lithium - 7 Nissan Leaf Gen 2 cells (48v cart).

Like others, I'm wanting to upgrade my BMS from the basic 14s model Bob included in his original build, so I am looking at 14s models with bluetooth functionality. In looking at Aliexpress, it looks like there are newer models are configurable for different cell counts, and which have a much higher amperage rating (up to 400a).

Newer configurable BMS model

1. What's the lowest amp rating that a basic 14s BMS should be for a 48v cart?

2. Does it matter to buy a newer BMS with a higher amp rating (up to 400a) if I might add an additional 7 Leaf cells in the future for additional range?

3. Anyone used one of these newer ones yet and can comment? I've heard positive reviews but figured I'd ask on here as well.