I want my gf to get a career
Why do you want your gf to start a career?
When she has a career she will be able to support me more.
You shouldn't micromanage your significant other's life when it comes to their careers. Especially if you're just doing it to benefit yourself. If she finds out your true intentions, she'll think you're selfish and may break up with you.
If we break up then it was meant to be. But I think she should get a career either way for us both to live on.
You can't support yourself? Maybe you should get a better career then yourself. Get some sort of second job and then you could support both of you too.