Is it possible for me to throw 180 in the discus?

I'm a 17 year old senior who is going to be throwing in college at this point. I am 6'1" and anround 240 lb, but im trying to lose fat and replace it with muscle. Around 220 is my goal for weight. I threw 140 sophomore year (when i was still 15) but i havent improved much since. I throw 140s-150s pretty consistently, but at my last meet i opened up with a 163 footer that i toe fouled :/ (they measured it anyways though, just didnt count it). Even though my season is over, I am still going to work with my coach and throw, and my goal is to be at around 170 consistently, hopefully 180 before the summer is out. However I need some guidance in order to do that, and my coach doesnt have too many answers. Can i have some tips for lifts i should do? I want to heavily increase my explosive strength, especially my "pull" in the discus throw. Also any tips for form would be welcome. My consistent problems seem to be that I come off a very narrow base, my disc doesnt have a whole lot of flight or height for that matter, and although my steps for the spin are pretty consistently good, I dont really "attack" the throw at the end, and as a result my throws dont have as much velocity as I'd like. I would REALLY REALLY REALLY love some constructive tips/guidance on how to achieve this goal. Any experts on the matter are welcome. Thanks!