My name Is Kyle, and I'm an old returning player to guild wars. I bought a new account recently as I no longer have access to my old one

Question #1 - Is it worth buying the bonus mission pack yes/no?
Question #2 - What level do you have to be to access the bonus mission pack?
Question #3 - Are the mercenary hero packs worth buying yes/no? - I don't like how they take up character slots.
Question #4 - Are the skill unlock packs wroth buying yes/no - Also are they skills easy to unlock or would I be better of buying them, for the sake of hero's.
Question #5 - Are they any decent guilds out that recruiting? - I'm looking for friendly active guild, at lest 15+ people active on a daily basics, decent guild emblem.
Question #6 - Anything else worth buying from the guild store? - I already have all the campaigns and eotn.
Thanks for the replies & answering my questions in advance.
Regards - Kyle