A lot of good stuff in very good condition in SEO right now,it really depends on how far you want to slab to it.536,556 should be finished paving now.If you're going that far east you might want to include 147 and 9 also.
If you want to stay more to the west get off in Zanesville and head down 555 towards 78 and do some of that ride that Jacob mentioned that includes 78,377,550 and maybe 676.676 drops you off kind of close to a couple good Washington county roads...Dalzell and Germaintown.
I'll probably be out and about tomorrow if you don't mind riding with old farts.