I'm to understand that $2 = 1 happiness. So all the best economic wonders appear to be +5 happiness. But what about the Great Monument? It gives +4 happiness, then you get another one for what ever Government you choose, then if you choose a government with an additional happiness boost, like Monarchy, then wouldn't that put the boost to +6 happiness, plus you get the effects of the gov't, like with monarchy, -5% initial infra cost.
Is this right, or did I miscalculate somewhere?
And if this is right, what would be the best wonder to get first? And if this right, I don't see why anything else would be better.