That's a big commitment of time. I'm not sure I can currently do it.
I assume the reason to play 90+30 is that you're training for a tournament with that time control? In my experience the increment is the important thing to keep when you're aiming for shorter workouts. For instance, when preparing for 90+30 we used to play training games at 30+30 in my club. They take much less time (~2h instead of ~4h) but they're still good practice for 90+30.
Also, do you have a deadline?
Can someone over 2100 or 2050 rapid play with me 1 hour and 30 minutes with the increment of 30 seconds per move?