I really think the best option here would be to use the 20 credits to get three extra girls and a seed, then take Jazmín, Marco, Hu Ying, and Zaneta. Jazmín could potentially help Marco build another vehicle capable of busting through reality and into the void, while Zaneta has the most in-depth knowledge of the CIA and would be valuable in orchestrating another overthrow attempt. With luck, their forces combined could re-enter the Waystation, free some of the more powerful, influential, and reasonable prisoners like General Shanthi to further lead the charge in freeing more allies. Hu Ying could take her revenge on Skála, then perhaps Jazmín could be put in charge of the facility alongside Zaneta.
If all goes well, it just becomes a matter of returning harmless/innocent prisoners like Mikaye Aiko to their home dimensions, using Jazmín's superintelligence to locate other mundane dimensions to house them in, and killing or permanently containing the genuine threats like Nethraxis, and then also those like Dr. Travis and Karina Serrano. Who knows, certain prisoners might actually be able to be successfully rehabilitated before being returned home.
TL;DR Overthrow and destroy/reform the Agency, rehabilitate everyone possible and kill the rest, send reformed prisoners home/to a dimension they won't be killed in.