I don't see a point in crying about time of the events, I hold off into recharging 20k ingots this week, and i did very well, bcs i knew smth more will came, call it a "feeling", i hope 15 wins in arena can be done in training to, bcs in ranked will be a challenge considering how many ppl do arenas.
Piece of advice: Don't recharge in the first day of events, bcs things can change later on.