Core 4x4 Rear Control Arms question with lift kit

[bluejay505]

I have a 2020 Ram Rebel with the BDS 4 inch lift kit. The lift kit came with rear upper control arm brackets. I want to purchase a set of rear Upper/Lower control arms from Core4x4. I am looking at the fixed trail series and the drop down has options for the type of lift I have. Which control arms do I purchase and for what lift height since the Rebel is 1 inch higher from the factory? Also, do I retain the rear brackets from the BDS lift kit or do I remove those and install the control arms to the frame?

Thanks!