Room Size Optimization Blueprint

I'm looking for a skilled designer to help refine and perfect room sizes for a house extension at the end of my shop we will use (24 x 40 ft). We have a rough drawing and a clear vision of room placements but need to finalize dimensions.

Requirements:
- Optimize room sizes based on our layout
- Provide a professional blueprint
- Need to know what kind of support needed for the floor of the main floor
- Implement minor tweaks to our existing design

Ideal Skills and Experience:
- Proven experience in architectural design
- Strong attention to detail
- Proficiency in drafting blueprints
- Ability to incorporate client feedback and make necessary adjustments