Hey Quinnaay,
I honestly think you need Boateng as one of the CB's tbh. Hes the best CB in that league imo. Naldo is pretty badass too with his massive height and 85 or so strength, and bags of pace.
For me, Farfan is miles better than shaqiri in-game too. He just has miles more strength. Also, he's good at cutting in anyway because his weak foot isn't too terrible and he often even finesses it with the outside of his right and it flies in anyway. Also Jansen is a great LB but in a totally different way to alaba, you may want to rotate the two around...quite often i even prefer Jansen because he's 6ft 3 and pretty strong..he just lands sweaty wingers on their asses 24/7.