I disagree. Best option for them is to take the safe route with Kalia and Lawon and taking out Lawon. It occurred to me we're only two weeks away from the golden keys ending, and everyone needs to be making moves to further secure their individual futures starting now. I know one player is, and that's Daniele.
Cassi knows she's going home. She's desperate to stay and will cut any deal possible with J&J, plus she obviously likes them better than B&R. I think just the threat alone of going up will scare her enough to stick with them and bring Dom along into their alliance, giving them a Shelly/Cassi/Dom/Adam alliance to take on Brenden/Rachel/Dani. B/R/D will ultimately choose not to save J&J, but Shelly and Cassi sure would, and Dom is more likely to vote with Cassi than Dani at this point. This move could therefore rattle or even possibly breakup the budding B/R/D alliance well in advance and put J&J in a more secure power position than if they didn't have Cassi.
The thing is that Brendon isn't thinking clearly ahead and what little thinking he's doing isn't very good. Here he and Rachel have Porsche sewn up in their back pocket, and yet Brendon wants to dump her.
Huh? Um...Dude...she'll stick with you through thick and thin, because she has nowhere else to go! Will Dom or Adam protect them over J&J? Kalia? Cassi? No. Dani does seem to be aligning with them, but I'm sure she'd flip in a heartbeat. Who does that leave B&R for support? Only Porsche...maybe.
See...if J&J take Cassi out now, that leaves them vulnerable to Dani siding with B&R and taking Dom with her. Plus B&R are on-board with Dani literally partnering with Dom and pushing forward as a foursome. That doesn't bode well for J&J. A Brendon/Rachel/Dani/Dom alliance would blow a Jeff/Jordan/Shelly/Kalia/Adam alliance right out of the water. I think Dani sees this possibility very clearly, and she has to know that she'll beat B&R hands down in any voting, because she has Dom, who has friends. But keep Cassi, and the power shift makes J&J the safest couple, because everyone sincerely does like them, will be indebted to them, and are all now reluctant to break them up over B&R.
Come around to the next HOH, and it would be B&R, Jeff, Shelly & Cassi and Dom & Adam competing for HOH, which would give the strongest newbies a chance to take out B&R early.
The only problem for J&J is explaining to B&R why they chose to put up Kalia and Lawon over Cassi and Shelly. Eventually B&R would figure out that the move totally screwed them in the long-term and the only person on their side is Porsche.