Get most of the offensive upgrades and units you want upgraded and rush to enlightenment. I can promise you'll get attacked a lot more at that point. People say not to age rush, but this isn't CoC; in this game it's actually a huge benefit to age advance before defenses are all up to age level (atleast once you've got your army at its max potential for that age) with the weekly discounts and events giving you bigger benefits. Like, if I didn't age advance to atomic when I did (my global base's defense are... lackluster... to say the least), I wouldn't have two atomic mortar buildings right now, or an atomic bunker from this latest event. That's humongous benefits, even if the rest of the base isn't up to snuff. If there is one thing I can say about this game, it's to never sit in an age advancing defenses when you could be upgrading to the next age and getting even more powerful offenses -- never stagnate.