Yes, the panacur is used to treat pinworms, though the dosage is less than I've usually seen recommended(20mg/ml). You're bun is about 1.75kg and is getting 0.2ml, or 20mg total, if that's the 100mg/ml suspension. 35mg(0.35ml) would be the usual dose for a rabbit that size, but maybe it's enough for treating pinworms. If you're concerned about the dose being too low, I would ask your vet about it.
It's good the vet is doing 5 days straight, then a dose 2 weeks later. Not all vets know to do the 5 days minimum. Also, if all the doses are combined in one syringe, you'll need to be careful about only syringing the correct amount. If you think that might be too difficult, you could squirt it all into a small dish or cup(I use the small medicine cups), then just draw up the needed 0.2ml into the syringe to administer each time, making sure to stir a bit to mix, before drawing it up.
I'm not sure why the Revolution is needed, unless your vet is just trying to cover all bases of parasite treatment. Revolution is usually used more for external parasites with rabbits (eg. mites, fleas).
It's not usually a concern for related rabbits to reproduce together unless they have obvious genetic health problems, so it's not something I would be overly concerned about if they don't appear to have any problems. Mis-sexing baby rabbits is fairly common, as it can sometimes be very difficult to determine their *** until they're more mature, at around 4 months old.
Their weight is in the normal range for Holland lops, if that's their breed. Though if it's a good weight for them, is best determined by checking body condition, as it will vary with each rabbit.
Monitoring your rabbits weight