Yeah, a 25% boost is usually enormous in these kinds of games. Basically you won't be able to compete with someone else who has it, so unless you're willing to pay...

What should be our second-tier building objectives? I've got all my resources at level 1, some at level 2. I've got a rally point, barracks, cranny, embassy, granary. No troops.

What do you need to be able to defend yourself?

How do you expand & profit?