Fully uplocked girl 5k8.
All ampies 15k.
All manyus 10k.
All gifts 5k.
Total 35k8.
Yellow 80/90 level boss gives 99/109 for participants, 33/36 for spawner.
Red 80/90 level boss gives 175/192 for participants, 117/128 for spawner.
You need minimum 9 boss fights to get daily quests done.
You can easily do 18 fights per day.
At least one out of 3 yellows/reds you will fight will be 90 level one.
Assuming you don't go pure exploit others, some of the bosses will be spawned by you.
But lets assume you are kinda lacking in patience and some kills will be on non yellow/red ones or lower levels.
Thus the average for ease of math for yellow will be 100, and for red 180.

Worst case scenario then is 7*9*(100+180) = 17k64. Nearly half of what you need, and its a scenario where you do only 9 bosses a day.

Typical scenario would be probably closer to double than thus 35k28, so on verge of clearing shop completely.

I personally have cleared the shop for phase one (so 5k8 Potatoes already used), and have already over 14k Potatoes waiting for phase two. If things will continue going as they are now, I should be able to buy all things before next reissue starts, thus leaving me with easy way to clear it fully before next event starts. Heck I should have a bit of time to maybe farm some additional manyus or dragons.