This way is also not fair enough,
I think you are confusing your likes and dislikes with fairness.
Nope, I really do like it but somehow it does not make any sense to me when you do in that way. It will be just the same as the first time you set it in the end of month. 23th and 30th will be just one week difference so it does not make any huge difference unless there is some pump and dump like what I said before
That does not make sense to you, because that indeed doesn't make sense. There's no point betting early unless odds are locked (and they aren't). Betting itself was nice idea, BS execution. I'll leave it to others.