Rui began forming the skeleton of a plan, though he was still far from fleshing out the details. Several facts had been established.
He was going for an active and direct assassination, not an indirect one. Chairman Deacon was highly prepared for both, thus it made more sense to go for the kind of assassination he was greatly competent at.
He also had to admit, a small part of the reason for this decision was that he wanted to do the deed in person.
He also decided on a close-range assassination rather than a long-range one. Chairman Deacon had taken more than the necessary protective measures to make sniping him with Death's Sympathy unviable.
Another decision he had made was that the assassination needed to be carried out away from a population center. He was unwilling to kill millions of innocent people to get rid of Chairman Deacon, especially when he knew it could be done otherwise.