Design 48V to 300V DC/DC Converter

I need a 48V to 300V, 3000W buck-boost converter for industrial equipment.

Requirements:
- Efficiency: Above 95%
- Size: Moderate, balancing size and efficiency

Ideal Skills:
- Power electronics design
- Experience with buck-boost converters
- Knowledge in high-efficiency systems
- Familiarity with industrial equipment power requirements

Please provide your detailed approach and relevant experience.