I guess it depends how your emotions resolve. If you don't want to be seen as a boy/man, then you can ask them to stop calling you that without elaborating further. I personally would not have friends or continue to stay in a space where people didn't respect my identity, pronouns, or whatever label I choose for myself.
For my transition I'm not looking to be seen as or called a boy - period, so being called a femboy would cause me the same pangs as being misgendered.
I think the thing I would think about is if you're okay with people deciding who you are. Sure, there's some affirmation as they see you as feminine, but once you open up to these people about your goals, will they respect you or continue to call you something that doesn't align with your transition.
Started going to a small local coffee shop a little over two years ago, and I'll never go back to the giant chains. The people working are always happy, greet regulars by name, always go out of their way to interact or talk with me- usually remember something we talked about before, comp my orders every now and then, host little events, etc. It's not just them either - I always have a way better experience going to non-chain coffee places. Oh, and the coffee is always waay better and priced better.