What mod can anyone recommend to try next?

[wilhil]

Ok, I really like this mod, but having a few problems trying to understand what I am meant to be doing :S

The homeworld planets all have cultral centers, and I can tell they are much better than the other sort of settlements,

Is it meant to be that I build on each planet as soon as I colonise, a settlement, then just upgrade to the latest whenever I can, but then the cultral center is something that I should aim to get much later on, if there is enough time to build it on a planet?

also I always seem to mess up on buildings that give bonuses both system wide and planet wide, however hard I try, I never really understand this and always seem to mess up, I was wondering if you have a systemwide and planetwide feature that do the same but do not stack, will it just do the first one built, or the one that gives the highest bonus?

With all the bonus giving things here, I am sure I will mess up, and just want to make sure I will not loose out!