looks pretty good, but i'd slide those adds up a few mins to maximize flavor/aroma. say 15, 10, 5, 0, 5mins post boil, dry hop.
why do you intend to dry hop so early? i would wait at least til its done fermenting and starting to clear otherwise you're losing aroma. at the least i'd wait 10 days then dry hop the final 4
also, why the 8oz of extract? is 11lbs grain the max you can do?