Can't lift any more weight it seems, WTF. Natural limit??

[Evom1]

Either follow a specific program or better yet, contact an online powerlifting coach and let them program your weekly training for you and they'll likely aid in nutrition as well

 

[miketee]

For girls and these twinks you speak of it is. Most powerlifters subscribe to the KISS theory. All we need is a squat rack, a bench, and a barbell. I personally do calf raises sometimes on the leg press. I find that it uses more knee than squatting so in your case I would avoid it at all costs.