Yes, I think you're right.
Previous casting descriptions matched with cast members:
Late-teen female, independent, good sense of humour, fit. Daisy Ridley
Young twenty-something male, witty and smart, fit but not traditionally good looking. Domhnall Gleeson
A late twentysomething male, fit, handsome and confident. John Boyega
Seventy-something male, with strong opinions and tough demeanour. Also doesn't need to be particularly fit. Max von Sydow
A second young female, also late teens, tough, smart and fit. AXED?
Forty something male, fit, military type. Oscar Isaac
Thirtysomething male, intellectual. Apparently doesn’t need to be fit. Adam Driver