My first thought was a little more than 2, but I went with less than two. I think should Kushner get indicted he will go ballistic. I don't know how much he support he is going to have from the GOP in congress after 2018 or how many will even be there. They just did a cash grab with the tax bill. Several have announced they won't run, and many know they will lose so they just decided to take the money and run.
The reporting I've seen has indicated that the WH counsel documented that they advised Trump that Flynn lied to the FBI in January, and that all the Comey stuff came after that, so I think eventually they can prove obstruction, but most likely he won't be impeached over it if the GOP is still in charge. He might step down though. I wonder how many more sealed indictments Mueller has on hand.