I will just say that you are gonna be wasting your time and money by doing this experiment.
If it's just a one time thing then may be you can proceed with the experiment but if your goal is to carry this on for a long term then may be you should stop this right now.
If the goal is to earn money which I think it is since your ROI is 100% then you should stop wasting your money.
There is no definite trading strategy here and you are just investing randomly and hoping to get good returns.
This might work 1 or 2 times but it's guaranteed to lose the next time. So consider rethinking about this right now.