Here is my simple 1 step solution to Obamacare repeal. Trump should announce he has a major policy announcement regarding the PPACA, and that he will be announcing the new policy in the Rose Garden. On the day of the announcement he should take the podium, backed up several people in lab coats and make a very simple announcement:

"Today my administration will affirm that henceforth we will administer and defend the PPACA, better known as Obamacare, with all of the fervor and tenacity that our predecessor... defended our nation's immigration laws and DOMA. Thank you, we will not be taking any questions."
“Science is the belief in the ignorance of the experts” - Richard Feynman