Waste of mytho unless you really like the look of relic. For one, coil is balanced around ilvl80 gear. Your relic is ilvl80, so you can just farm binding coil for the ilvl90 weapon drop. There's no reason to +1 your relic now because no content requires it. Now if your luck is awful, or if you just really prefer the relic over the coil drop, go ahead and +1 it.