Dave:
If Van hasn't changed the drawings since I built my 8, I would deviate from them on the brake lines down the gear legs to the brake calipers.
At the caliper end, I used 12 inch long -4 stainless steel braided flex hose on mine. I bought them from my local circle track race car supply store. They have the same 37 degree fittings so you can use your regular AN 90 degree fitting in the caliper.
There have been several reports of the 1/4 inch alum. line work hardening and breaking at the 90 on the caliper. This causes complete brake failure on that side and I've read of at least one fire caused by brake fluid spraying on an overheated brake disc.
Another positive---it allows the caliper to float easier on the pins, improving wear on the discs!
Mannan Thomason
RV-8 N!61RL