I have tried to qualify and it doesn't seem that difficult because even I reached it in no more than 50 spins with a profit of $3
Although at first I was a little hesitant to achieve it because I only left no more than $4 of the monthly bonus but in the end I managed to achieve the challenge.
Before you proceed you need to estimate if how many players can achieve the challenge and if how much profit you can get, to see if it will still be worth it to continue or not. Thanks btw for reminding us that we can use our monthly bonus on pd challenges. I think I tried it before and then completely forgot it after a long time.
That's why I always set a stop when the profit reaches a certain point
At least it helps me if the first 150 rounds don't hit the target then in the next 150 rounds I have to hit 2 hits on target.
And regarding the issue of capital, to be honest if the goal is to achieve the challenge from Primedice I always use the bonus from Primedice itself, because I realize the reward that I will get then it doesn't seem efficient to make a deposit if it's only to achieve the challenge target