Well, $171,000 is a little much for me even if you can guarantee a $25,000 profit. You are talking about a return of a bit less than 15% and while there is nothing wrong with a 15% return, the idea of risking $171,000 in a casino to gain $25,000 is not something I would recommend. So I'd rather stick with something that involves a lower up-front expenditure.

Even the idea of earning $2,500 with a $17,100 bankroll is not an attractive "casino proposition." (Ten percent of your original amounts.)

I will have to leave the "professional gambling" to others. With the "numbers" you are talking about, I will remain a recreational player who hopes for the best.