Bms is inside the battery only the battery specs can tell you any rating.
PAS usually goes on the rhs but your is on the lhs, it depends what the specs handing is for it but often one can fit it on either side. If fitted on the lhs side the magnate disc face mad need flipping over because of the magnet pole faces.
It's a shame you didn't ask here first before buying the kit as we could have made sure everything will work, I have been using Kt stuff for years and never had an issue with any compatibility.
It is easy for me to say that as I understand them when fitting them, it is different with a third party such as your self as we don't know 100% the exact parts you have and how they have been fitted or wired up via forum talk.