I need some quick sugar to get out of the night-time low, and something that calms my stomach acid because otherwise I get a heartburn (tried running w/o breakfast and needed at least a cup of warm water with some gel).

Ideally I would take a piece of bread or two and some cheese, maybe philadelphia and some honey might work. Also one egg could work for me.
I have done this on early morning starts.

No more than maybe a cup of liquid though.