I'll spare you the cheering section comments. I agree, it is more difficult to be under people's radars when you're 6'4".
But, here's what I suggest:
1. Don't worry about the future so much, it's too nebulous. Just focus on the next step.
2. Begin by going to places dressed where it doesn't matter if you are read, for example a TG support group, or a place where they have good drag shows. Bring your wife.
3. Do this for 6 months to a year.
4. When you've reached the point of being comfortable with yourself in public, start going out to semi "safe" places, such as cafes or restaurants in the gay-friendly parts of town. Wear flats. Then you can branch out from there, such as having a manicure in a nail salon nearby, or doing some window shopping and perhaps even going into a shop or two. Do this for about 6 months.
5. Now we've reached the nebulous future, but let me say that if you just focus on steps 1-4 for now, over time you'll have found some places to go where you feel comfortable. You might have branched out even more. It won't matter whether the people who work at your regular haunts or the patrons fully understand who you are or not. You'll find that they'll treat you nicely in the manner that you present.
