I finished pulling a run of conduit through the left wing. I left about 4 inches extra inboard, and an extra 8 inches outboard which is way more than I should need.
I have more than enough conduit to install two in each wing, so I'm thinking about maybe installing another conduit for antenna wiring should I decide put one in the wing tip. If I do, I'll come up with some sort of bracketry to run it through one of the larger lightening holes rather than drill more holes in the ribs.