19/hr is a little on the low side. I start off my instructors at 24/hour which becomes 25 after six months. I have a guys that makes 75/hr. Yeah that's right, it's not a typo. And that is for flying a 172, 182 or PA44. Same rate applies for ground. Convince your students you are worth that much and they will gladly pay with no questions asked. That's what I tell my guys.