Coins:

There are two times you need coins. You need 210 coins for chapter one and 250 for chapter two. In chapter one you need the coins to build Noddy’s Airplane and in chapter two you need the coins for Noddy’s Magic Rocket.

The ways you can collect coins are following: driving minigame when exiting/entering through magic gates, collecting Skittles (only available after getting the Lost Skittles quest) and doing certain quests as taxi and delivery.

Footprints:

After you talk to Mr. Plod in the last quest in chapter two, you get a quest to collect footprints from everyone in Toyland. You can collect these from almost all of the characters during other quests, but if you dont collect any you will be tasked to collect all of them before the last quest.

Quest Order Explanation:

The order of the quests seem to be RNG. So making splits other then for chapter 1/2/3 is impossible.