That's on the short side for carrying that much weight. Based on that, plus the fact that you said you already lost 40 pounds a while ago, I'm going to make the educated guess that you're carrying a lot of bodyfat. Or at least you were, and I'm still wondering how you lost it (cardio, diet, etc.) and what you actually look like right now.
(You got a lot of other good advice in that thread, BTW.)
Your best bench was 315 with "shitty form, bent wrist, and bad leg drive".
In addition, you're doing zero back or biceps work because of the golfer's elbow that you've been nursing for over a month, and you haven't squatted or deadlifted this entire year because you've tore your hip flexor and sprained your ankle.
Add in that you struggle with a half-bodyweight shoulder press, and you've got pretty much the worst case scenario - a young dude following a horribly-designed program for so long that he's literally falling apart. But hey, you benched three plates. So there's that. I guess.
I believe that teens should eat well while training hard and smart. You are not training smart. You're racking up injuries left and right. While you're probably strong for your age (videos would help, to check form if nothing else), you're 100% on track to screw something up that puts you out of the gym for months and sets you up for problems in the long run.
This is why I prefer to have younger lifters start with simple "easy" bodyweight stuff. To build those connective tissues and support musculature, before gradually easing into heavier free weight work.
If you're a teenage male and can't do a dozen push-ups, pull-ups, and lunges because an injury's stopping you, you need to re-evaluate basically your entire approach to lifting or else you won't be in the gym 30 years from now.
What does your current training week look like? The days, exercises, sets, and reps.
And while we're at it, what, exactly, did you eat yesterday?