Std Size Women (Up to 5'10", 175 lbs) White Opaque Thigh High Stockings

Can I cut them for an ibuki (danganronpa v2) Cosplay without them falling apart

Can you wear them with a garter belt?

How long are these? What is the exact measurement? I am short (5’0, a little less than 100 lbs) and I need this to go about mid thigh.

I have red discolorations on my legs, would these cover my red spots?