One thing I'll point out on my set-up pic, those lines cut into my base are at approx 11, 15, and 18 degrees. I just sight down the blade and see about where I'm falling - I don't get too specific, and only use those marks when I'm changing a factory bevel. Spend plenty of time at the low end and as knifenut said, try something in the 220 grit range for setting your bevel. Once you get the bevel established a lot of it will come down to feel and observation (again back to knifenut - at least 8x magnification is a real help). Using the more coarse grit media with a Sharpie will really show you what you're doing and where.
HH