What parts to order for cylinder head installation?

[Echo1975]

I am putting on a new head for my motor and need someone to give me a bit of advice on what parts to choose and why?

I've heard of head gaskets made out of different materials etc.

I'm not listing off everything yet because I haven't chosen all the parts yet as I am still thinking what to add to the list.

The water pump and timing belt were replaced 10000 km ago so I won't be buying those now.

List:
1x Headgasket
2x Camshaft seals
12 x Valve stem seals / These had 2 options with inner hole of 7mm and 8mm?
Set of headbolts / Are there different kinds that are better for the head?