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Basically, I agree with caraboo.
A smart, accomplished young woman who has goals and ambitions at age 25years has much time to sort out her personal life and should use the ensuing 5 years to "find herself" personally before committing to either of these two relationships or any new one at this time.
Work on achieving your own personal and professional growth before evaluating how others' achievements or lack of will impact your life.
Is it a sad thing that young people cannot have many friends and must live with one or the other instead, committing to a relationship while they learn about the other. This is not a moral judgement but, rather, a practical one. Choosing to actually live with another contains many responsibilities and committments and, yes, even impositions, and, then, one feels "stuck" in an uncomfortable situation.
Freedom. That's what I opt for at age 25 years, especially with a bright and ambitious future, but, really, for all. Neither one sounds "perfect" and neither does the writer. There will never be a "perfect" choice but one more p;erfect will come along when the writer is more perfect. There is much opportunity for personal growth while pursuing the career the writer describes she wants.