My heart knows who I love. My wife's heart knows who she loves. What I've told my wife, and what she's told me, is that we both want the other to be real and happy. We're too important to each other to do anything else.
I don't know what it's like to be in love with someone transitioning, but I do know that love often has unique elements and each relationship is beautifully different - and the differences aren't always easy, but it sounds like you personally are accepting and that's particularly beautiful and unselfish and wonderful. Transitioning can be a life or death issue. So having some support while going through it must help a lot.
I won't say things will be easy though. It's a lot of stress for everyone, as not everyone is accepting or understanding. Your partner is going to likely have horrible things said to you. They might also be said to you and about you too. Personally, what people say about me doesn't really bother me - I'm secure in who I am and know I'm getting a good deal in my relationship with my wife. But seeing her hurt can and does hurt me as well. There are some horrible people out there. We dealt with this just today in fact.
I know trans people who have great jobs. I also know trans people that don't work due to discrimination. It's not fair, it's not right, it's not just. And it does anger me. But as important as employment may be, it's way less important than survival. And I see transitioning as someone doing what is necessary to save their life. Their life is vitally important.
I do encourage you and your partner in your partner's transition. Doing it early, and before other major life changes (like leaving college) often seems to make things easier - less history to try hiding or to be reminded of, a chance to move to a new place so that you aren't constantly reminded of the past by others, less difficult to explain employment history, etc.
All that said, things are getting better, and will continue to get better. People are learning and getting educated. And your partner very well might get a great job - I know trans people in the computer field making 6 figures. I'm glad you're sticking with your partner and listening to love, not others. One bit of advice for you: take care of yourself too. That will let you help your partner the best.