I more meant that it would take at least that size-class of heavy lift launch vehicle. With Starship this would definitely be doable, and I’m really optimistic

I more meant that it would take at least that size-class of heavy lift launch vehicle. With Starship this would definitely be doable, and I’m really optimistic about it; I just wanted to be cautious in my predictions. I also wouldn’t be surprised if Delta IV’s life gets extended. Vulcan is facing plenty of development delays, and Blue Origin are yet to produce anything useful.