DIY Nitrokey 3A

Hello friends, I just started a personal project of attempting to create my own nk3am. After I realized the code was open source, I purchased a nrf52840 dk and started creating breakout boards for the SE050 and memory module.
My question is this - is there a guide on how to go from new hardware (fresh nrf52840 from the factory) to a functional system? I fumbled around in the makefiles quite a bit, and was able to get to the point of loading a bootloader, and seemed like I was able to also load provisioner firmware, but after the provisioner loads, the USB never seems to come back online (makefile calls wait_for_usb.sh but it never comes back). My current setup only consists of a nrf52840 dk with no SE050 or memory module connected. Is the provisioner firmware looking for hardware in the loop and halts as it isn’t found?
Basically just looking to understand if I’m going in the right direction - the SE050 and memory module should be assembled in the next week or so.
Any help is appreciated!