You've gained 55 lbs in 5 months?
K, first of all that's way too much weight to put on in that period of time. And it's obviously mostly fat, because your lifts aren't very good, especially at that body weight. Slow down on the weight gain. Even during a 'bulking phase', what you've done is excessive. At any age.
Consider dropping some pounds immediately, as they won't be necessary to be strong. Eat better, and keep working out.
I'll give you my closest comparison that I can give in terms of normal strength to weight numbers for a beginner. When I was 18, I started lifting, and couldn't bench press 100lbs. Within about 9 months, i benched 200 lbs, and weighed about 160. These days, I can bench press 300 lbs, and weigh about 170. I'm 5'10. There's no reason to put on a ton of extra weight until your strength goes up. Stay leaner, you won't regret it.