Emitter follower for parallel LED switch
If the LEDs drop 2.0 volts at 30 mA and the emitter produces 2.6 volts when driven by 3.3 volts at the base then the voltage across the LED series resistor is 0.6 volts and, with a current of 30 mA flowing, the resistance is 20 ohms.

With 25 mA of LED current, the forward volt drop of the LED might be a fraction below 2.0 volts but it will be a small fraction; possible 1.9 volts so, the modified resistance value will be 0.7 volts / 25 mA = 28 ohms. I'd choose a 27 ohm resistor.


  Does this work with saturation and everything that entails this
  configuration?


The BJT will not be saturating unless the Vin supply falls below about 3 volts. With the supply at 4.5 volts, the voltage across the collector-emitter will be about 2 volts and although it's close to approaching the region where saturation starts to begin, you can largely ignore those problems and rely on the normal beta value for the BJT.

MMBT2222 data sheet extract: -



With VCE at 1 volt and 100 mA flowing, the DC current gain is still pretty good at typically close to 200.