The yellow stuff has been the standard in the U.S. for years. You can get it from Phil C. The tubing you ordered is also good but may burst before the yellow does. I use 1/4 x 1/16 in my speed models that use a bag, yellow for all combat but 1/2A.
4 0z for Fast, 3-4 oz for F2D, 2 oz for speed limit. My favorite tank quote is from Ron Columbo. "I use 2 oz for Fast Combat.....get it done fast"