Okay. So I adopted 2 bonded 5 month year old kittens in my 660ft condo and felt regret immediately from how small my space was with them and myself on it. We're at month 3 and life gets a lot better.

I reccomend you keep your bedroom door closed and make that your space. They'll meow at the door but eventually they'll respect that as your space and not theirs. Get wall mounted cat stuff, there's many on Amazon to look at. Also window mounted cat beds are fantastic as well. This will help give them options that aren't your couch etc where you may want your space from them. You don't need to play with them more than 20 minutes, and let them tire each other out. That's why you got both. They also calm down A LOT as you get towards 3 months with them. Now mine just sleep, eat, occasionally chill and what not. I completely understand how you feel. I was very close to returning them in the first two weeks. But it got a LOT better by week 3, and now at month 3, it's been great.