Who combined make a pittance compared to what you wanted to add.
Here's the numbers for you.
Ross - $3 million
Sweeney - $1.75 million
Bailey - $3.9 million
Total - $8.65 million
Darvish - $5.5 million/$9.33 million AAV for Luxury Tax calc.
Papelbon - $12.5 million
Beltran - $13 million
Total - $31 million/$34.833 million AAV.
So even subtracting the 3 players you listed the Sox would still be adding $26.183 million, all of it over the luxury tax which would in turn add another $10.47 million this year. That's still an additional $36.5 million they'd spend this year, on top of what is already the third highest payroll in the game. But of course when you ignore the dollars part of it and simply whine about wanting every and any player out there (not to mention living in a fantasy world where the players would have put up the exact same stats in Boston as they did elsewhere) everything becomes a lot more simplistic.