1 . Who you 6 star depends on whether or not you ' re willing to 6 star Shannon . I personally don ' t have mine 6 starred and I ' m at 100 % GB 10 runs , and I don ' t use her anywhere else in the game at all . If you need it , then it ' s worth it , but otherwise I ' d say focus on TOA units as your next 6 stars . BarettaSpectraMav would be the optimal choices , in that order in my opinion . If you plan on using Spectra for DB 10 as well , maybe he ' s worth doing before Baretta . 2 . No . Stick with GB 10 for a while . I ' ve had it on farm for 2 months and can clear both TOA rotations and I haven ' t moved to DB 10 yet . Violents are a luxury , not a necessity . If you don ' t have a good base rune pool swifts , fatals , blades , despair , energy all from Giants then you will struggle to progress at a decent rate in the future . 3 . Get to at least 70 , although I ' d suggest getting it cleared before working on DB 10 . 4 . 5 star him asap , and he may be worth a 6 star depending on your rune quality . I 6 starred him for my first TOA clear and don ' t regret it at all . Happy Thanksgiving ! EDIT Forgot to touch on your farming problems . Slot 6 accuracy rune . Those are instant sells unless it gets a 20 or higher speed sub for Bernard . Especially on a farmer . Someone like Baretta it ' s acceptable , but not a DD .