My son's first birthday went great because I kept it real simple. The cupcake cake worked for us and Publix can do that for you. They can decorate to look just like any other cake so you can get whatever designs they have, plus you get the little cake for your daughter too.
I was worried about giving my son the little cake as he had not had any sweets before then, but when I gave him his cake (by the way, stripped her down to just a diaper, and put her in an area where it is easy to clean before giving her the cake) he mainly played with it in his fingers and got it all over himself. Not much went into the mouth. Keep in mind you WILL need to give her and maybe even you a bath after this, it won't wait until your guests leave.
As far as decorations, I just got one banner and a packet of the decorations that you can just tape to the walls, all generic so I can use them again. But spent my money on 3 or 4 mylar balloons that were specifically for 1st birthdays. I just got a few because they were more expensive and did not want to have any latex balloons just in case they pop. With my little one crawling around, I did not want to chance not finding every piece of the latex balloons.
We kept the food simple with bbq, corn and garlic toast on paper plates and plastic flatware. I got the 1-year dinner and dessert plates and cups but skipped the napkins. People look at plates and cups more but just bundle up the napkins so I just got a coordinating color. It was cheaper so I could get more and I didn't feel bad when people got a bunch and only used them slightly. Everyone could serve themselves and once we sang the Birthday Song, everyone could just help themselves to a cupcake.
I splurged and got my son a birthday outfit and a cloth hat. I spent my money on him instead of getting hats for everyone -- most adults aren't thrilled to wear the elastic paper hats anyway.
Try to keep everything as simple as possible for you. You'll be busy enough being hostess, talking to your friends, opening presents and watching your child. And remember, you're also clean up crew at the end of the night.
Save your energy, money and ideas for birthday #2!! You'll need it more then and your daughter will be much more aware about her special day then.