Cool, a rather stocky rocket, with dense propellants! Lots of room for growth by simple stretching. 4.5 m diameter vs Falcon 9's 3.7 means 50 m rocket for same

Cool, a rather stocky rocket, with dense propellants! Lots of room for growth by simple stretching. 4.5 m diameter vs Falcon 9's 3.7 means 50 m rocket for same volume as Falcon's 70 meters. They could design it for really high flight rate off the bat.