That's good to hear atleast your not trying to justify why there fine in this tank ?.
I think your going to struggle to keep them this way for 6 months even if you manage to keep the water good just the stress of the confined space may cause immune system problems.
I fully understand you not wanting to let fish go is there no way to temporarily rehome them untill you get moved and set up.
well I talked to my lfs, they have a 350 with an albino pacu and 2 RTC. He said he can keep them there but he won’t be responsible if they die.. and he wasn’t super excited but I’ve spent A LOT in there so I think he’d be willing to let me twist his arm. I’ll have to see.