any tips for steam age victoria

i always end up making way to much money building the royal harbor when i am going for a science victory. so are they worth building so many of them? should I still build the normal money district? should i also make large naval forces? are sea dogs worth it? how good are resources in the sea I think I obsess over them too much like carbs and fish. and just any tips you have for me for victoria I play on stanerd rules. and i am very new!