I don't think it would be fair to take them out of a 6m long avairy setup and place them in a flight cage.Red Rumps are smallish birds, right? Why not just get a flight cage and keep them in your home?
Thank you so much @KhizzI'm sure you mean well, but I don't feel like judgement is appropriate right now. Ali has experienced some losses in the last few days and is likely already feeling upset without members rubbing salt in the wound.
People here have made some suggestions in case Ali can actually make some alterations (in case he hadn't thought of that particular thing) but he knows his own abilities, and let's not forget that he is subject to his parents' wishes and those of his siblings too. He has given his reasons why he won't be keeping them and it's clear to me that it is not a decision made lightly. Many very experienced members here have rehomed birds for various reasons. It happens.
I'm sure he'd appreciate keeping this thread on topic.
It was not an easy decision to make either. I really didn't want to have it come to this. Especially with two recent deaths, I wouldn't want to rehome another animal without a very good reason.