Assuming neither Justin nor Gattis is traded, we've got a max of $6-$10 million left to spend on another SP if Hart so chooses (going by his earlier quote that payroll would be kept close to the same as 2014 - words were "north of $100 million and south of $120 million IIRC). If that $120 is the true ceiling, you have to assume they'll hold at least $5-$6 million back to be able to eat money in a B. J. trade or make an addition before the deadline.
C- Gattis - $650,000
1B- Freeman - $8,500,000
2B- Peraza - $520,000
SS- Simmons - $3,142,858
3B- Johnson - $6,000,000
LF- Justin - $14,500,000
CF- B. J. - $15,050,000
RF- Markakis - $11,000,000
C- Bethancourt - $550,000
INF- Callaspo - $4,000,000
INF- Gosselin - $550,000
OF- Almonte - $550,000
OF- Toscano - $1,000,000
SP- Teheran - $1,500,000
SP- Wood - $650,000
SP- Miller - $650,000
SP- Minor - $5,100,000
SP- ??? - $???
CL- Kimbrel - $9,500,000
SU- Carpenter - $1,100,000
SU- Simmons - $550,000
RP- Johnson - $2,500,000
RP- Russell - $2,400,000
RP- Shreve - $550,000
RP- Varvaro - $650,000
Uggla - $13,000,000
Estimated Total - $104,162,858
C- Gattis - $650,000
1B- Freeman - $8,500,000
2B- Peraza - $520,000
SS- Simmons - $3,142,858
3B- Johnson - $6,000,000
LF- Justin - $14,500,000
CF- B. J. - $15,050,000
RF- Markakis - $11,000,000
C- Bethancourt - $550,000
INF- Callaspo - $4,000,000
INF- Gosselin - $550,000
OF- Almonte - $550,000
OF- Toscano - $1,000,000
SP- Teheran - $1,500,000
SP- Wood - $650,000
SP- Miller - $650,000
SP- Minor - $5,100,000
SP- ??? - $???
CL- Kimbrel - $9,500,000
SU- Carpenter - $1,100,000
SU- Simmons - $550,000
RP- Johnson - $2,500,000
RP- Russell - $2,400,000
RP- Shreve - $550,000
RP- Varvaro - $650,000
Uggla - $13,000,000
Estimated Total - $104,162,858