I don't know for sure but I reckon get the kitchen first, then the floor. That way, if you need flooring taken up to do wiring, plumbing etc, it won't disturb new floor, and also floor won't get damaged in the kitchen installation. I think many people have wooden floorboards in their kitchens, so lots of kitchens must be fixed to wood! Mine is...and my last one...and my parents one...all fine. Lastly, if you get the flooring after, you'll need less as you'll only need to fit it around units etc, not under them as well. So might be cheaper too.
We laid the bamboo floor and then installed the kitchen over it, for two reasons, firstly, the room is huge and if we changed the kitchen layout we would have to re install flooring at an added expense, secondly, it gives a neater finish. We had already planned the kitchen layout so we knew where all the pipes and wiring would be going and any spaces needed were left.