I'm just a 6-7 out of 10. I know this. Even when I was in my late teen years and ages 20-22 I was given that rate too. Some white Cuban lady once called me "squaw" at my workplace. She said "you may have fair skin but you can't run away from your roots, squaw". I didn't reply back. I did nothing.
Unlike my dad, she was pretty back in her days. She got with my dad, a tan skinned latino. That's why I'm just average.
If I get with a 5-7 man or much shorter man, my kids are going to be average or mediocre and shorter. I want to have kids with the best genes, for them to be beautiful like mom. Is it normal to go out of my league?
And what about the man? You're saying you want to be with someone better than you to improve your kids genes (stupid reason to look for in a partner by the way)... so what, does that mean that the guy needs to lower his kids genes for you since he could do at least as good as himself and have better looking kids? Quite selfish thought from you.
But in any way, that's not how genes work. Are you concerned about the genes? Don't look for appearances, look for obesity, respiratory issues, whatever.