Choose percent expected profit or minimum dollar amount

[oraclown]

Currently, the user can set an expected percent profit, but this doesn't really work well on Polygon since the actual dollar amounts are so small. You could have an expected profit over 50%, but only be making a few cents. This is also troublesome, because the estimated gas fees aren't completely accurate since there's a delay before the transaction is actually submitted.

Solution: Add the option to have a minimum expected dollar profit. For example, I want an expected profit of at least 50%, but not less than $5.