I can answer Q1. The order definitely does not matter. All the drives are aware of who they are, so when you import, as long as they are all present, you’re good.
Surprisingly, I’m going to make my money back quick. I was previously using older Supermicro machines and small hard drives that used a ton of power. This thing let me downsize power-wise (like a LOT), and I doubled my total capacity.
I can answer Q1. The order definitely does not matter. All the drives are aware of who they are, so when you import, as long as they are all present, you’re good.