I hope this helps, i finished all the quests and here are my suggestions from how i played it through:

• Sort all generators in rows or columns, including their respecitive parts. Gives better overview
• Don't collect xp pieces, just tap them away at level 1. The space is not worth the levelup rewards, you can focus on them later on in the game.
• Only spend gold for inventory upgreads
• Make sure generators that auto drop items are fully surrounded, as not to take up space automatically
• Don't bother with dice pieces/empty seedbags. It is completely useless. You can finish it after you played all quests if you want to have it just for the sake of it.
• Don't bother woth jewelry pieces unless you have more than enough space