Tbh if you met your perfect partner surely they would want to support you in achieving your dreams. Then again part of me wants to say what is the point in achieving your dreams if you do not have a loving partner to share and celebrate your success with. I like to think that my partner and I have similar dreams, neither of us are after big glittering showbiz careers, we just want to live happily together earning enough money to keep us and give our future children a good education and lifestyle. In much the same way as our parents did for us.
If I had to choose one or the other it would probably depend on what came along when. If my bf had not come along when he did and someone came along and offered me a once in lifetime chance to live the dream then I would probably jump at the chance, but as everything I do now affects him if someone came along with the same offer I would have to consult him and find out how my choice would affect him and how he feels about the decision.