Obviously everyone has their own way of doing it, but here's mine
Bring her in a week to 10 days before farrowing, worm then if needed.
We always give an iron jab, but soil is said to be just as good and plenty of folk don't iron jab. (A bottle of gleptosil costs less then £20)
Haven't ever clipped teeth - it is more a commercial thing where you have lots of piglets fighting for teats (and more highly strung pigs - traditional breeds are a bit more laid back)
I would recommend a heat lamp, at least for the first few days, it draws the piglets away from mum and reduces the risk of them getting squashed and it's great to warm them under when they're newly born, especially if she farrows at night (which most pigs like to do - just to keep you on your toes
)
If there are more piglets than teats they should be fine, we notice ours tend to queue up and the more dominant ones feed first but the others do get a fair share - we've never had to top up but if she has lots more piglets than teats you might find you need to (this is a 'wait & see' situation IMO)
Hope that helps a bit ? Keep us posted and make sure you have photo's to announce the birth
nothing worse than hearing about new arrivals and not being bale to see them
Karen