Well...I would like to open a casino and let him invite all his friends for just such odds offered. Hell...I'll make it 6 for 1.
Give it a whirl but give it time to work. None of this one shot and quit crap. Go all out , you can do it.
Casinos would probably make money if they paid fair odds....they have more money and gamblers are dumb and the greed gene would supply the coup de gras. 777