I've recabled bikes before, but this one is a bit different and wanted to run this by the gang for tips/suggestions.

The bike is a Volagi Viaje - a kind of rando/gravel/touring road bike that is my everyday commuter and has a lot of miles on it. It's got the 105/5800 hydraulic disc group set.

I am having some sticky shifting in the rear DR - shifts to bigger cogs fairly reliably but iffy shifting to smaller cogs; sometimes won't shift at all, then you click again and it jumps up two cogs smaller/harder. It was suggested here, which makes sense, that after 6-8k miles it just possibly might be time to replace the shifter cables.

One thing that's different about this bike is that it has full-length cable housings. Every other recable job I have done has either had stretches of cable run inside the frame, or stretches of bare cable alongside the frame. But this bike has cable housings that go all the way from the shifters to the DRs. I don't think I've ever seen that option when ordering cables/housings before. What is the "keyword" I'm going to be searching for? Do you have a favorite brand for this kind of cable housing?

I do have some shift cables laying around, so I was tempted to try just replacing the cables - but my sense is that if stuff is worn out from mileage/grit, I probably need to replace both the cables and the housings.

Would appreciate any other tips or suggestions you may have for this project.