Knickers, James doesn't have a set bedtime, I just go off how tired he seems, it can be anything from 7.30-9pm. He generally sleeps for 12 hours-ish so I don't mind if he goes to bed later as it means he gets up later (means more sleep for me) If I thought he needed to sleep at 6.30pm I'd have no qualms about putting him down then, I say go with your instincts. You sound like you have her in a good routine!
If your lo is fond of toast, why not try spreading different things on the toast to get her used to new flavours on a platform she already likes? You could do melted cheese, cheese spread, eggy bread, hummus, marmite, unsalted butter, fruit puree, mashed banana, mashed hardboiled egg, tuna in spring water mashed up with a bit of fromage frais, mashed sardines in tomato sauce, veg puree or thick soup/stew, smooth peanut butter (if your family has no history of allergies, although you may want to wait til she's one) apple n pear spread (from healthfood shop) or make your own toppings such as mushroom and onion sauteed in a bit of butter then whizzed down in the blender to a spreadable consistency.
I'm hungry now! Off for some toast.