Ok well the Yellow up front and red in the back is a very good setup it runs great but it drags alot i suggest using this setup on a pretty well smooth surface.
Now i'm going to put yellow all the way around and i think i'll be pretty happy with that and i love the 1.5 Steering rack it's perfect!
Edit:I just went and tried out the yellow all the way around and i love it it's my official setup