1st off I do agree about Arraez. He was a GG winner (I believe) and don't mind him over there for 80 or so games. He is kind of the Escobar type where he isn't great at any one position but plays all over the infield well (if that makes sense).
If Twins were to sign Abreu, I am guessing they would only want him at 1B for 20-30 games. Kirilloff/Miranda would fill in the other 50-60 games at 1B.
As far as competing with the Padres, I think he is familiar with the Twins so that should help. Also, the Twins stay around 50% (or less) of revenue so they could easily fit the salary. My guess is one or both of Polanco and Kepler would be traded to make this work. I don't see losing those two hurting too much if Correa/Bogearts were brought in. I honestly would lean XB, I really like guys that hit over 300 and if you got Abreu and XB there would be, at least 3.