Unified WordPress Design for Multi-domain Brand

We are seeking a highly skilled WordPress developer and designer to help us streamline and expand our brand's web ecosystem. We need to bring five distinct WordPress websites under a unified aesthetic.
The fixed budget for this entire project is €300 (non-negotiable).

Scope of Work (5 Websites):

1. Fitness Website (Base Foundation):
- Already created. This serves as the visual and structural anchor for our brand architecture

2. Healthy Restaurant Website (Built from Scratch):
- Must visually and structurally align as an affiliate branch of the fitness brand, note on Content: We do not have texts or photos ready yet. You must use AI tools to generate high-quality copy and images that fit our healthy food concept.

3. Spa & Wellness Website (Built from Scratch):
- Must visually and structurally align as an affiliate branch of the fitness brand, note on Content: We do not have texts or photos ready yet. You must use AI tools to generate high-quality copy and images that fit our healthy food concept.

4. Professional Personal Website:
- Already created. Needs design improvements, polish, and seamless integration/linking with the fitness brand ecosystem

5. Basketball Academy Website:
- Already created. Tasks: Migrate to a new hosting provider, update payment gateways, and perform minor aesthetic and functional updates

We provide the hosting and complete branding assets, logos, and clear brand guidelines