Congrats on becoming a new tent owner, we just bought one too! I think, aside from sleeping, you are going to need something to cook on/with, something to eat off and some chairs. Also lighting/lanterns. That is pretty much as far as we have got so far, so will be watching this thread with interest.
we have a khyam kansas/ontario 8 and its fab. what else you needs depends on how 'in to' camping you get..lol We are still relative newbies only couple of years in so only just getting to point of buying stuff for longer trips but basics for me are something to cook on, plastic cutelry and plates,ice box,lamp,nappy bucket for night time peeing..lol torch,table and chairs.