Barndominium Layout Optimization

I'm building a barndominium and need help optimizing our floor plan. While we've designed it with natural light in mind, I feel we might not be maximizing space effectively, especially in the living room, bedrooms, and bathrooms. The last 8x60 before the garage will likely be added on later when we add stairs and do second floor. I’d really like to figure out the 30x60 mostly for now.

Key Requirements:
- Improve room layout for better space utilization
- Maintain or enhance natural light

Ideal Skills & Experience:
- Experience with residential floor plan design
- Strong understanding of natural light incorporation
- Ability to maximize space efficiency