3D Open-World Game Development in Unreal Engine

I’m looking to develop a 3D open-world offline game in Unreal Engine with a completely customizable structure. I need the ownership & full source code with comments for easy future edits. My budget is limited, so please keep this in mind and ensure the work aligns with my requirements. Below, I’ll outline the core features I need for the game: Game World: 3D, offline, small open-world map, basic terrain, dynamic day/night cycle, basic weather effects, dynamic traffic system, interactive environment, dynamic open-world events, environmental soundscapes, interactive props. Player Interaction: Pickup zones, minimap and basic UI, basic character movement, weapon mechanics, melee combat system, basic health system, inventory system, weapon modifications, basic cover system, interactive shops. NPC Systems: Walking & driving NPCs, enemy NPCs & civilian NPCs, police NPCs, NPC dialogue system, enemy AI behavior, dynamic AI pathfinding. Gameplay Features: Vehicle controls, wanted system, mission types, side missions, randomized objectives. Performance: Totally lag & heat-free. Please inquire about powerful post-processing options to ensure smooth performance, with flexibility for low (longer time), normal (balanced time & heat), or high (shorter time, more heat) settings. Purchase Feature Options: • High game quality. • High post-processing. Completely customizable code & assets, cross-platform support.