Hope for the best. Plan for the worst.   That's a fair summary of "Repeal and Replace" system we are presented with thus far. 

Seems unlikely they have a plan ready as the ACA was technically a 3rd draft bill. The first two drafts kept getting voted down by Republicans forcing them to re-craft the bill over again. But the thing is, each time they finalized a bill, they tasked the CBO (Congressional Budget Office) to crunch the numbers and make sure the numbers added up and I see no news about any bills or proposals being sent to the CBO. If they really have a bill, but see no need to send it to the CBO, then Republicans are basically getting ready to screw over 30 million Americans who gained access to health insurance from the ACA.