I had the same experience with the platforms when I first played Space Age. But this depends entirely on how you scale your Nauvis factory before you start launching rockets. You don't want to start too small, if you rush to rockets too quickly the beginning of your space exploration will be tedious.
I don't fully agree, you just need the Nauvis base to be able to build a ship to Vulcanus. All key ship parts are essentially free on Vulcanus, it's much better suited to being the base you scale up to get space-based logistics really going.