No one call tell you if your chickens will get boring or old or annoying. That will be something between you and them. You may decide it's not for you and have to find them homes. If you have serious doubts about it already I'd suggest not doing it. Find someone local and visit theirs, see what what you think about them. If they don't hold your interest trying to watch them, it's not for you.
* Kinda tough to sleep in sometimes when the "kids" are hollaring for breakfast and "out, Out!, OUT!!!". Vacations can be difficult. And, naturally, illness or injury (yours OR theirs) can be very trying. BUT, I think they're worth it.
I've had 'em all my life, I think there great! They can get a little bit annoyin every once and a while... I have one hen in mind named Ruth that follows me EVERYWHERE, somehow ended up in my kitchen sink, rides my horse with me, tries to jump in my truck when I open the door, jumps up in my lap, etc, but I like her a lot, it only gets slightly annoyin sometimes when I'm in a hurry to get somewhere and she's right under foot, but I usually just end up pickin her up and takin her with me then! Crazy chickens!
They aint hard to take care of. Just make sure they got the right kinda feed for there age and fresh water, check 'em for mites and other ailments every once and a while, give 'em a good coop and keep it clean and they should be ok!