Farming guardians with the Guardian's Aid passive is one of the best currency making strategy at the start of the league. U basically getting a double value out of running those maps. I think its a good choose. But I'm not sure how much fragments costs, unless u want to farm Elder and get some watcher's eye. But hey u're a lot closer to headhunter. I want to see which build you will do and how u will feel with headhunter, cause imo its best feeling in the game.