The best advice I could give is GO FOR IT! The closeness you will feel with your little one is worth it, even if you are only able to nurse for a little while. I had plenty of milk the first go around, but had a very colicky baby who wanted to nurse all the time (which I later found out was totally normal for a baby with colic) and a very nosey, strongly opinioned grand-mother-in-law who stayed on me constantly that I was starving my son because if my milk was 'strong enough' to satisfy him, he'd a) stop crying, b)sleep longer than an hour at a time, c)be able to go 4 hours between feedings. Needless to say, I gave in and put him on formula, only to have him act THE SAME WAY on the magic elixar! LOL! By the time I figured it out, my supply was gone. So, just go with what you feel is working best, don't listen to nay sayers, and concentrate on your new little one. Every baby is different and you will find that what worked with one won't work for the other. I am the mom to 3, and g'mom of 2 with another on the way (the colicky son and his wife are due with their 1st in Sept...paybacks are sweet! LOL!) I have made it clear to my wonderful daughter-in-law that my advice is free, but she can feel free to toss it at any time. I hope you enjoy the same priviledge with your family! Good Luck on your little girl!
PS> La Leche is a WONDERFUL source for breastfeeding moms....staffed entirely by those of us who have been there, done that, as opposed to nurses or doctors who can only give 'book' advice because they've not.