I did exactly the same thing!
The way your going in gauntlet you won't need those frags you'll just get the whole soul! Hope you can do it!
Yeah I don't really need frags, I was delighted with valor talisman full set (3nd one) which I haven't got on the own arena event. Well sow and ss are never enough too...no regrets here, I'm happy to get these strategical packs. Cheers