I'm glad you're at least considering
letting these fish live in proper conditions, and I hope you can do it sooner rather than later. It saddens me that your stance is to wait for your fish to die before you reconsider.
Why not give them better care before it comes to that?
still strongly recommend you to at least rehome the oto and the cory, if you're still insisting on going with the setup you have. Obviously they're not going to breed if you only have one of each, so your comment about breeding a new species is already pretty ridiculous. These fish are going to be really stressed out until you either rehome them or they die, that's the harsh reality of it.