I dont think id use the one time restore on an ArkaIV, assuming you placed the gm call to get it restored. I found the magian staff trials a good excuse to play blm anyway.
To be honest, as a WHM you are better off with a Tefnut Wand and an Augmented Genbu Shield. You can get rid of a lot of cure potency gear since it caps at 50% anyways. Replace those gear with MND and Healing magic. Now if you want a capped Cure Potency set up for SCH/RDM/other mage jobs, then yeah... that sucks that you threw it out :\ lol.