GTA FiveM Dev Setup

I'm looking for an experienced GTA FiveM developer to fully set up a server for me. The setup should include:

Custom Vehicles:
- A variety of customizable cars, motorbikes, and emergency vehicles.

New Game Modes:
- Implementation of Role Play / Serious RP game mode.
- Additional innovative game modes to engage players.

Role-Play Enhancements:
- Scripts and modifications to enhance the role-play experience.

Ideal Skills and Experience:
- Proven experience in developing and setting up GTA FiveM servers.
- Strong knowledge of creating and integrating custom vehicles.
- Expertise in game mode development, particularly for role-play scenarios.
- Ability to work efficiently and provide quick turnaround times.
- Good communication skills and availability for ongoing support.

Please provide a portfolio of previous work and an estimated timeline for completion.