Should get rid of them. The Cons should be in the 29 gal. IF you get a 55 later, then you can keep 1 GT. Two Texas and 1 GT in a 29 Gal is irresponsible. Keeping them suffering so that they can breed "feeders" for you aunt is a horrible reason. What kinda life is that? If you wanna breed them, you need a much larger tank. Dont be stubborn and selfish and keep those fish in a small tank.
You might think people are being rude to you, but its the truth. People here dont like it when fish are abused. You arent equipped for these fish, you should stick to Cons only.
Throwing fish like this randomly together isnt gonna work. With these cichlid, putting them together like this and saying " Ok, Start breeding! " Isnt gonna work, they arent like Cons. When people buy these cichlid they buy big groups of them as Juvies and let them pair naturally. The only thing that will happen in this scenerio is all fish will kill eachother, if they dont kill eachother 1st they will die from the bad water quality, because a 29 Gal isnt big enough for them.