For me Option 4 is the best of the bunch, however the 'A' could do with some modification.
Option 5. The 'A' is too stylized, Option 6 the 'A' is too bold and upright, Option 7 does not look good. What is 'Aff' about your blog, the same for option 8.
Just my view, you understand, I'd stick with option 4 but work a bit on that 'A'.