$25,500 invested in RVX at $1.40 nets a little over 18,200 shares....at $10 they would be worth $182,000...
Net gain $156,500....more than double the gain as compared to buying and then exercising warrants in your example.
And to protect the down side....if the most you're willing to lose is $5,000....then set a stop loss somewhere around $1.12/$1.13