I previously owned a HK VP9, they do shoot very easy. Although, I decided to get away from striker fired pistols, after an accidental discharge. It takes some getting use to with the DA/SA trigger, but you can get really good even with a heavy DA/SA trigger. I’ve started shooting my HK USP better and better. I like how safe a pistol is with the hammer being down, or hammer back and locked.
I’m sure you would be fine with a P30, a P2000, or even a USP compact.
7.5lbs is not much.
There’s an old revolver called the Nagant, some have trigger weights of 30lbs. Which is nearly impossible for an average female shooter to pull. But, they manage it.
Anyways, HK makes a great gun. And whatever you get, the more you shoot it, the better you are.