Re: Possibly dumb questions about 4 day wait, etc. (purees)
Answer1: If you have already 'cleared' sweet potato and apple, then you can eat those AND the new food. Doesn't have to be all the new food.
Answer2: You can try both. But, I'd probably recommend individually.
Answer3: There's no reason not to do this. The biggest 'evil' of cereals is that it's just not 'necessary' as it was when people were using it to fortify formulas. You can also look into baby cereal cookies and maybe you'd prefer to try that.
Of course, you know that unless your family has a history of food allergies, it's not necessary to do the 4days, but if you want to do it, I hope the answers above help!
SAHM to Magnolia May (09/10), Luke Russett (04/13) and expecting 11/16. Wife and best friend to my airman.