I always so far go for domination wins.
It's why I suppose I don't specialize really the cities into gold, science or production. Early hammers are much needed and wanted. I frequently play wide empire, and frequently play autocracy for the needed happiness and sometimes needed double oil resources.
Fight and kill early, less trouble later, with AIs and their CS allies. Warmonger penalty, meh, it doesn't really matter to me, at least on king difficulty at least. Just kill them and no AI, no warmonger penalty - you win domination.
Preferably, you would fight 1v1 wars vs AI, but in defensive war, with strong army, you can defend surprisingly well vs multiple AIs on multiple fronts. You kill enough of their units, and you can sue for peace without victor.
I play the game from total war perspective. You need enough gold, to stay at balance point with revenues and expenses, at the VERY LEAST.
Staying at negative gpt is bad, your units start disbanding themselves. Only military units, are the arbiters of (domination) victory! Iron and blood, like Bismarck said. Not consensus politics of democracy. If somebody votes against you in WC, kill them before the next vote, so THEY LOSE THEIR VOTES CAUSE THEYRE DEAD.
All expendable gold goes to unit maintenance basically. If cash exists, upgrade units into modern unit, OR build more units. (just to be sure, win before even entering the war, this is what Sun Tzu teaches)