One more vote for doing what is right for yourself.
HOWEVER if not transitioning is right for you, it's still okay. I wish someone would have told me that years ago. There is so much pressure in the trans community to jump in with both feet, never look back, etc. If what's right for you is sitting back and taking some time to figure out what you want, that's okay too. If it takes years. That's okay. Don't let anyone tell you to speed something up. Don't let someone hold you back either.
You have to go at your own pace and if in the end you figure out that you don't want to transition, you're not being bad, or doing it wrong, or instantly going to be exiled from transland. If you do want to transition, more power to you. I'm happy for you that you have someone so supportive in your life.
If you don't want to, you are still "allowed" to call yourself trans. You're still "allowed" to identify as you wish. Don't let anyone tell you otherwise. Part of doing what is right for you involves realizing what sacrifices you're willing to make as of right now, and what chances you're willing to take. I applaud anyone who takes the time to think it out then act how they see fit in a rational way. Sometimes, yes, doing what is right for you involves alienating people. Sometimes it doesn't. Sometimes it'll surprise you and throw you for a loop. People you thought had your back suddenly won't and some of the least likely folks will end up helping you in ways you can't even imagine.
The best advice I can give is to take it one day at a time, make lists of pro's and con's till your fingers turn blue, and just think. At some point the answer will become plain as day. It may be tomorrow, it may be ten years from now. When it's right it's right.