Until now it worked out ok! I peaked at 11k dec and then spend a little for a card.
But as i said prices for rental skyrocket at the moment so i think it will be hard to keep.up the pace.
Maybe i just need to get a lil lucky with rewards ;)
At around 300+ chests i hit 2 epic and 2x 2000 dec so i think that could be a little luckier.