
I have used Panacur 10% liquid for many litters. I have the smallest of breeds and have never, ever had a problem. (I'm not the only experienced breeder to say this.)
The dose given to the bitch from day 40 is actually a quarter of the normal adult dose. Although I worm my bitches prior to mating, this is not enough. Because it is the pregnancy hormones that wake up those encysted worms, which would mean that your pups are then full of worms. Using Panacur 10% the pups will be born 98% worm free, so all they have to do is thrive.
It's important to remember that this was the only drug licensed for use on pregnant bitches for a long time. It has been tested at many times the normal dose with no ill effects. Your pups will be wormed with Panacur at 14 days, and they are dosed for 3 days. Remember to really study the information given. You need to be sure that you are competent to be sure you give the correct dose. I have pups weighing 2 ounces at birth so need to be meticulous at 14 days, as some only need a 0.02 dose. Mum will be wormed at the same time, but only on day one, as she then has a normal adult dose.
This forum has members with widely differing views, and we are all entitled to our own opinion. By the way, I buy my Panacur 10% online, you will find this much cheaper than buying from your vet. I use hyperdrug for mine.
Tummy button clips I've never used. Most of the time your bitch will handle the job herself. She tears the umbilical cord with her teeth. So, if you have to do the job yourself tear it. You can always tie off with dental floss if it is really necessary. I've never used a bulb syringe either, but I have always cleared airways in the same way that you do with a lamb. I buy my Dopram from hyperdrug too. I have only needed to use it a couple of times (the pup needs to have taken its first gasp before it is used.) I would rather throw it in the bin unopened than not have it ready just in case.
When she whelps she may not want to use her whelping box! So be prepared. :-) Good Luck!