Sourdough using stiff levain

Just wanted to register the results using a stiff levain. I took some of my 100% hydration starter and built the levain in two steps. The first build was also 100% hydration while the second build was a stiff version with hydration around 50%. I think the results have been better than expected based on using AP flour, since it does not have very strong gluten. Let me walk you through the method used:
Ingredients
60 gr stiff levain @ 50% hydration (20 gr water; 40 gr flour)
30 gr whole wheat stone ground flour
30 gr rye
180 gr AP flour