I made the mistake of leaving Nauvis too early, and my coal train got into a deadlock, killing the power. By that time I was on Gleba already, trying to figure it out from scratch.
Emotionally? It was damn scary! Gleba enemies kept evolving and I didn’t have the resources to fend off their attacks. I rebuilt the harvesting towers countless times, letting the spores (pollution) die down each time…
But… Being able to overcome that was amazing! I managed to build a rocket, go back to Nauvis, fight off all biters that took possession of my real estate, and start sending coal shipments to Gleba for landmines. That really tipped the scales.
Right now I’m a few steps further. I built more space platforms to send emergency supplies where they are needed, and each planet has a Spidertron able to fix any emergencies that might pop up. Especially that last part is very comfortable.
So to relieve your anxiety, consider doing Gleba first so you can unlock Spidertron as a backup.
You can use a tank as well, as long as you have radar coverage! I learned that the hard way… Keep it near the delivery building where the stuff from space drops, it has free radar coverage even without power.
If you keep it stocked with construction bots, radars and solar panels, it should be an okay backup too.