You know, I don't see the load capacitance on this, and not this is my only problem. Probably the differential version is not a big deal, but simply I just don't know it.
Did you do some research on it? It would be the best. Probably others have done it already, outside of this forum.
My other thoughts, concerns you could explain:
- why would you double the currents? I don't know any specification, I can't tell you.
- halve the caps depends on where they were originally, can't just halve every caps I think...why double the load caps?
- why halve the switches??
- ah, common-mode feedback definitely you will need