Congrats! From what I hear it’s an annoying weapon to go after.
As for what you should do with it….
1. If you salvage it, you have a good chance to get globs of dark ectoplasm (for ascended crafting) and getting that sigil of fire (which can be worth a couple gold or so on the TP). Mystic forge can have a CHANCE of giving a better weapon, however, I am slow to trust the mystic forge as for all the times it gave me something worse than I put in. In this sense, I would salvage with a Black Lion Salvage Kit.
2. If you unlocked the skin (making the weapon account-bound) it will be stored in your account wardrobe, which is accessible from your bank & crafting stations. If Volcanus is in there, you can access the Volcanus skin on all of your characters, costing a transmutation charge to bind the appearance for each weapon.
3. Lastly, it’s subjective to you! Maybe you’ll want to run a condi build sometime in the future, who knows!
Hope it helped, and sorry if I give too much advice. I do that alot