Danny is not going to draft 2 1st round picks for the next 5 years.
He will if he doesn't think he will get enough value trading the picks, but he won't be averse to trading a young player with upside that he drafted a year or two ago.
If you think Danny is an above-average drafter (I'm in that camp), then this is the right way to do it.
Get the talent first then flip it. It will be worth more than the "market value" of the pick, which is determined by what it would yield in some average GM's hands.
This is how we did it with Al Jefferson.
As current examples, I think right now we have two players in Sully and Olynyk who are looking (in early returns) to be more valuable than the picks that were used to get them.