I'd deff say your back is your weak point as with most novice competitors.. but your legs are looking great.
Hit deadlifts, even partials are great for thickness.. really though in 9wks there is little you can do to build mass, deal with what you got.. train hard.. and come in as conditioned as possible to the show, worry about adding mass in the offseason. When you strip off more fat your flaws will stick out at you so you'll have a much better idea what needs work.
Btw, are you on anabolics or natural? this will make a big difference on how you approach the calories/cardio coming into the show.