Well if you're I-Monking at 55hp then your offhand will be the -50hp Grim Cesta and your wand should be the collectors smiting wand from Droks. You don't really need anything else.
If you are looking for the next best thing to the HOD sword this is the "Godliest" you will find. It has Smiting 9 Req +5energy^50 and 10% casting on all skills.