Why will they always need the barge for the Falcon Heavy core? I think they would be more likely to need it for a second stage than the Heavy's core, because S

Why will they always need the barge for the Falcon Heavy core? I think they would be more likely to need it for a second stage than the Heavy's core, because SSECO occurs very far down range, and at such a high speed that the rocket cannot make it back to the launch pad without a great deal of fuel. Alternatively, they could be planning to launch from Texas, and recover some stage(s) in Florida. *edit: in another comment on this discussion, kllrohg mentioned that SpaceX's stated intent has been to land all stages back at the launch site. https://news.ycombinator.com/item?id=9388762 https://news.ycombinator.com/item?id=9388762 http://www.space.com/13140-spacex-private-reusable-rocket-el.. http://www.space.com/13140-spacex-private-reusable-rocket-el....