I used all of your handspun plus the yellow ribbon (not sure of yardage) that you suggested and about 2/3 of the Cascade 128. I cast on 60 stitches. I nearly panicked when I was casting off because I had started with your handspun and ran out about 15 stitches before the end. It worked out o.k. I used the Cascade 128 along with some wool that I've had for about 30 years because the color was good.
Now I want to try more--as you predicted, I'm hooked!