Proper nutrition is most important during the growth phase of fermentation where the yeast are getting used to their new environment (your wort) and propagating and gearing up their biological functions to best deal with their surroundings. If you are careful sealing the wort in a sanitary manner there is no harm in letting it sit until tomorrow when you can pitch all the fixins together as planned.
"I'm a glass half-empty kinda guy. When it's half full, that means you're filling it, like a bartender. When it's half-empty, that means you're drinking it. I'd much rather be drinking the beer than pouring it."