Krieg kill team for 40K?

Hello everyone,

Apologies if this has been addressed already!

I have managed to get hold of a veteran guardsmen kill team box in prep for the release in January.

Can anyone advise the best way to build the kill team for optimal play in a normal game of 40K and also so it is all in line with the rules?

For example what special weapons can I have and how many?

Thank you in advance :)