The Marths to me seem a bit askew/
1. You need 180 flags to get the 5 Set prizes.
2. This requires 60 Purple chests @71 => 60 * 71 = 4,260 Candies.
3. All sequential quests plus daily quests plus 12 pickups per day = 2,145 +770 + 260 = 3,175
4. This leaves a shortfall of 1,085...WHICH you have...