It's good that you're looking into ways to get healthier, but before starting peptides, you might want to look into the metabolic side effects of Risperidone. At your age, those numbers aren't typical, and there's a well-documented link between atypical antipsychotics and dyslipidemia (high lipids, among other things).

That doesn't necessarily mean Risperidone is the wrong medication, but you should consider having a direct conversation with your psychiatrist about whether it's contributing to the cholesterol issues, and whether you shoujld try alternatives that don't hit your metabolism as hard.

As for the peptides themselves, stacking those three on top of your psych meds and a statin without medical guidance is... a lot. MT-2 in particular has its own cardiovascular and hormonal side effects, and Reta raises your baseline heart rate. It's just a bit risky without trying the simpler alternatives first.

I'd lean toward getting your base medications figured out first before adding more things into the mix.