Haven't got there myself but most of the images i've seen of other peoples builds show wiring either inside flexi-trunking like this stuff: https://www.amazon.co.uk/Hamimelon-F.../dp/B07GBVGH3X
Or spiral wrap, like this stuff:
I think the former looks a lot better!
Presumably if you use actual loom tape you have to get all wiring in situ, so you know the lengths and where the various wires split off from the main run, then remove it all to wrap it, allowing for the various 'junctions' where wiring needs to come out. I assume that's a bit easier with conduit, and EVEN easier with spiral wrap.