ST in generally does HP, Lifting capacity, melee attack damage.
Jumping height is measured by basic speed.
8 IQ is a disadvantage worth -40 points. Which gives you 40 more points to play with.
Skinny is a -5 disadvantage. Prevents your HT from being more than 14, and gives you a -2 ST disadvantage to resisting knock-back.
Basically, I need to get an idea of the racial norms for this Mantis Species. Your character can have more ST if you really want, I just need an idea for averages.
“She'd become a governess. It was one of the few jobs a known lady could do. And she'd taken to it well. She'd sworn that if she did indeed ever find herself dancing on rooftops with chimney sweeps she'd beat herself to death with her own umbrella.”
― Hogfather