I can see someone planning meticulously the murder, the immediate fleeing thereafter but not the rest. If I remember images, he wasn't wearing gloves so he may have had to clean it before he planned to get rid of it. Plus he may have hit hiccups in the process that may have derailed part of his plans. The fact he had cash both in local and foreign money probably means he had planned to move out of the country but was kind of waiting for the dust to settle.