I think Adam will keep nominations the same and make a deal with Porsche to keep her over Kalia. Adam must now think he has a shot at F2. He will realize if he knocks out Jordan or Rachel this week, he'll never get their vote or Brendan and Jeff's votes in the jury house. (Once it's down to the final four, it's probably everyone for himself so if he were able to knock Jordan or Rachel out after that, it will just be thought of as strategic game play.) And Adam knows no one in the jury will care (not even Dani) if he throws Kalia to the curb now.
Leaving Porsche in is also probably in Jordan and Rachel's best interest. She was a do nothing in the house while those now in the jury house were there, and Brendan, Jeff (and Rachel and/or Jordan, if they get to the jury house) won't think she deserves to win. She'd only have Dani and Kalia's vote. And she might not even get Kahlia's if Kahlia leaves thinking Porsche threw her under the bus to stay.
Kahlia is also likely to do better at questions (or morph test) than Porsche, so she needs to go now.