To answer your question, unless she is pretty secure about herself and relly loves you, you will break up. Her living with you escalated things in her mind and taking a step back is going to be a huge blow to her. And when women feel bad, they take it out on the most expendible person: their bf. You kick her out and she can have any guy coming right to her place banging that sweet hole with you none the wiser till she gets up enough steam to quit you.
But the really, let's cut out the doomsday scenerio and get to what's really happening. She's constantly in your face, you can't get any alone time at your own place, and sex has probably went down. Instead of looking at moving her out, you need to look at yourself. I mean, women do a lot of crazy stuff and can be to blame for a lot of things, but guys mess up too and you think it's all her fault. What do you do to blow off steam? Do you just come home, eat, and watch tv all night, or do you actually go out and do stuff that interest you? Do you think just because she moved in you have to stop working as hard to get here in the bed or do you still try to be romantic? Do you take her with you when you go out or at least offer to do so?
See when you move in with someone, the relationship changes. You can't be the same knucklehead chasing every vag that moves so you can dump your load in it. You got somebody who still wants that exciting life you promised her whether you know it or not, and she's expecting you to pay up. When you get ask her to leave, she will feel cheated and she will leave unless she's just the type to let a guy walk all over her. The thing is either you make a commitment to grow up or you go on an let her go because you are not going to get the best of both worlds like you're hoping. Believe it or not, she made an investment in you and kicking her out is pretty much saying you could care less about it. So with that, it's time to man up to either accept her being out of your life or to make things better on your own end. With the latter, you need to stop blaming her for your lack of space and create some for yourself without alienating her.