Naaa, girls are easy! Most of the time when my DD poops, her labia doesn't need cleaning. It's a very very bad poo that gets all over the inner bit! But even then a quick wipe and you're done. You just don't get poop properly inside (I assume that's what she's worried about?)
Actually I'm having a boy this time, and I'm kinda freaking out about poops. I come from a family of lots and lots of girls, so baby boy bits kind of look freaky to me...(sorry!! haha) and I'm imagining having to clean poop from all over the place, all over the balls and everything, eeeeeek! There seems to be a much bigger surface area to clean!
As for nappies, buy what is on offer! Big supermarkets in the UK are always doing "baby events", we go and buy the huge boxes of whatever brand is on offer. Good value. If you find yourself a bit tight on money, the nappies in lidl are absolutely excellent value.
IMO there is very little difference in nappies. Wipes are wipes, I tend to prefer the ones that are less like paper purely because I don't like the feel of them and they're more difficult to get out of the pack. Ones with a plastic lid tend to dry out less, but I feel guilty buying them and will always make sure they go in the recycling. Buy the cheapest!
The only time I have ever had trouble with nappies was when Poppy was really little and we forgot nappies, and had to buy "ultra dry" style ones which gave her a rash. I believe ones made for newborns are slightly more kind on the skin, and they can be more sensitive when little.