Asset list for game Level

With my game level blueprint done and my mechanics and objective thought out I now have to create a Asset list that will prioritize what I will make first and what is important to make the game level.

High Priority 

• Barrels(explosive)
• Locked Crate
• Generator 
• Gate(exit to level)
• crate filled with weapons
• key to locked gate

Second Priority

• Buildings
• Ladders
• Lamps/light posts
• cart(to hold explosive barrels)
• table

Low Priority

• tree(Dead)
• normal barrels and crates