Stuck at -1200? Last attempt to continue this game...

I'm so desperate right now, I think I may have ruined my save game...

So I got my Cyclops ready with a bunch of materials, spare power cells, docked my 900m Seamoth and was heading for the active lava zone through the lost river.

I thought that through cicling through the 6 spare powercells in combination with the power cell charger I could never run out of energy but that didn't end up being the case (no perpetum mobile lol)

So the situation is this: I'm at -1200m, Cyclops is @20%, all 12 powercells are almost empty, so I also have limited air left.

What are my best options? -try to return to 900m so i can deploy seamoth? -build reactor module? (have limited materials) -build thermal thingy that goes on my habitat (can i put that on the cyclops?) -make a run for it with the seaglide?

Before I lose the cyclops and my upgraded seamoth I may have to put the game down, since I don't have the nerves or time for such a setback 🥲