Indeed Paymon is the perfect ally for this plan. To work with efficiency with him think about putting an altar to the West. His sigil is important. Think about carving it on wood and put some blood weekly. He likes also one of his other names Karibu. West, water, cups, death symbols, 10 of spades tarot card are also things that are of interest for the altar as well as music instruments, bells, money coins. Have fun!
Thanks guys but I am working with another spirit instead