Originally Posted by Drip

That's only if you are extremely unlucky in pulls, getting the voucher and the blooms only in the 50th pull of each ranking, or if you want to get absolutely everything, all the gold, all the lvl 5 manyus, all the gacha seeds. People who reset as soon as they get a voucher or a bloom should need about 40,000 coins on avarage, which is already a whole lot more managable, especially with levelups and gatherings.

Yes, on average that would probably work, although I would stall call it "barely manageable" rather than "a whole lot more manageable". By the nature of randomness some people would have bad luck. For them this would not be enough, even if for others it's smooth sailing.

40k would still require ~475 stamina daily. You get 480 stamina daily at best from normal regeneration (if you don't miss any by sleeping or well... I hear some people have other things to do in life, although I can't sympathize). If you get every single hunt (again, more than six hours of sleep are wasted anyway) you'll get ~240 stamina. That means including level ups (I doubt you can get more than one, because the event missions give little EXP and you don't have much stamina to spend on other things) you'll probably have around ~300 stamina to spend daily. Again, assuming the best of conditions and assuming you won't actually need more than 40k, which is something a small stroke of bad luck could screw up for you.

It really all rests on how they handle the second half of the event. That will make or break this event for some people.

Edit:
And yes, I was talking about clearing the event box originally, but like I said, even just getting all upgrades is a crapshoot at this point.