I adopted both of my ekkies, and I couldn't be happier. I would adopt again if I had it to all do over. Then only thing I'm dreading, is my hen is young so she hasn't hit puberty yet. That is a major advantage if you adopt an older bird, you can avoid it. She is also much more assertive than my male. He is more willing to just go with the flow of things, whereas she wants to direct the flow of things.
Also, their diet can be very complex, not only in the selection of fresh food you get them, but the preparation. My two tend to like their chop ground fine, but that could change at the drop of a hat. An ekkie could like it finely chopped today, but want large pieces tomorrow, then somewhere in between the day after that. Then they may get bored of what you feed them today, so you better be ready with a different menu tomorrow.
As far as having them in a separate room, that might work, and it might not. If you are willing to have the bird either with you or on a stand or play gym where you're at anytime you are home, then it wouldn't be an issue to have the cage in a separate room. However, if you think there are going to be times when you leave him/her in the cage when you are home, which does happen at times, then you should leave the cage in a main area. I keep both my cages in the living, for there are times that I have to get work done, and I can't watch them like they should be if they were out. Keep in mind, if you have a play stand for them, they still need to be watched. They are like toddlers, and will get into anything and everything as soon as your back is turned.