Upon further review and calculations, GeorgiaBuck2 is right (provided Texas does not lose any points due to player re-rankings, which I think are already complete).
If we get Diggs, Neal, and Dodson that puts us at 27 commits, of which only 25 get counted for team points. The two lowest rated players (Jones and Southward) would no longer be counted.
We'd get 711 points for Diggs, Neal, and Dodson:
Diggs: 5* #2 WR = 299 points
Neal: 4* #5 CB = 215 points
Dodson: 4* #24 OT = 197 points
711 points
This would give us 4992 points total:
Current total of 4281 + 711 = 4992 points
We'd drop the lowest ranked commits:
Southward 3* NR (40 points)
Jones 3* NR (40 points)
Thus would lose 80 points, giving us 4912 points:
4992 - 80 = 4912 points
Texas has 4960 points, 48 more than 4912.