@RW_Slick Ok so unfortunately I don't have time to do this over the next few days but it looks like it may be feasible to get it by using the cake opportunity on Jordan. Time it right, he will be alone around the time you kill Morgan in his suite and you can shoot him from the queen suite and hopefully escape before people discover his body.
For Suit Only, do the cake opportunity, kill cross, hide his body, and then do the bury the hatchet opportunity like you did before. Using a loud gunshot distraction should allow you to KO the letter guy quicker if you panic him whilst he is in the bathroom. Using the panic from the gunshot may make it easier to place the topper, I'm not sure tbh.
I don't like doing the sniper kills where you are a few feet away but I can't ser an alternative. It would be cool if some targets could be lured to areas where a sniper kill would hide the body like in the Sniper game that came with absolution.