If you place a cargo pad and a silo on a planet together with inserters to transfer items plus some power, you can make more platforms.
Personaly I recommend placing a tank with roboports (you can use a mod that adds vehicle radar to give it vision).
In order to achive that you have two options:
-use editor mode to move tour character or spawn whatever you need on the surface
-exit remote view and press enter to get inside platform hub since your character is standing in the middle of the hub instead of being stored in it to prevent droping on planets
As a middleground I would suggest adding a new location to the star map. A space station that is placed between Gleba, Fulgora and Nauvis that is connected to Nauvis(or Gleba, Fulgora and Nauvis or even Vulcanus and Aquilo to make mining specific chunks convenient by providing a hub that has a direct connection to each planet. Be mindful that it would require custon asteroid spawns especialy Aquilo to provide correct asteroids and their ratios).
By preplacing all required structures (or a tank with bots) on a tiny station you could provide a way to make new platforms. This location could be avalible from the start or unlocked by research.