whoa! that's great!!
i would get them a few month apart though so you can work with each of them indiviudally and quarentine them correctly
Also, make sure you watch the conure when its out with the keet and tiel. Birds who arent form the same continent get in more fights with eachother then birds who are, tiels and keets are from aussie land conures are from south america
good for you though, my mom is against me getting the bird so I'm just using and grad money i get for it