At first, you need to think: Are you going to terraform this world or not.
If you are going. You need a lot more money, than if you are not. So It would be perfect if you choose horizon corporation, faction, which random events can give you a lot of money. Wait for coulple of these events, and now you'll have a high revenue. Then stabilise your stats, to stop terraforming,(of course if you have researched some of terraforming buildings) and out game for a couple of days. When you'll come back, you'll have got a lot of money. So first of all research all the resourses. Then you'll need to research spaceports, because it's very useful. Now build one or two of spaceports in your cities, stabilise the pressure, and begin constructing the Sky farm satellite, and all other satellites if you have money. Only now you can continue your terraforming. Reach paradise stats, and build a grass farm and stabilise stats. And then wait for a week or more. Now you'll have a large population (it can become even larger if you built a space elevator), tonnes of money and a lot of culture points, which you can spend on independence. Only now. And also you can make a free culture edits if you've built a Lagrange academy satellite.
That's how you can make an easy victory. But it will take a long time, so you probably won't like it.