Once you're full-time, it gets harder and harder to deal with facial hair. I am constantly amazed how few people have decent female voices. Voice practice is time-consuming and requires a serious commitment over about 6 months.
You may require work with a voice therapist for adequate results.
You can basically start with a clean slate, and you don't have to deal with all of that as well as moving and interviewing.
At the very least, you should be clearing your face with one weekly session that can carry you to the next session. Voice is one of the most neglected parts of successfully blending in as female. I spent under 0 on voice stuff, and I never get clocked on the phone.
For young women who live at home or are financially dependent on their parents, this is the most critical step in your transition and must be planned out very carefully.
For older women, it's still important to do this early on, I feel, especially if you are married or in a serious relationship. However, despite the fear of losing your partner, it's unfair to them to keep something like this from them, since it will affect their lives almost as much as yours in some cases.
Seeking legal advice should be done as a way to being fired.
I also recommend getting your legal name change and Social Security switched immediately before coming out at work.