Instead of attempting to sing soprano, and only confining yourself to an ordinary female vocal range, you can make the use of your lower tones and still sound female, just one with a deeper voice. Or what I do, which is to sound like somebody with an androgynous voice or a female voice with masculine elements, allowing me to use more of my voice. If you simply wish to sing in a high soprano range only, it's unlikely you'll be able to sing with as much expression as you want, unless you have an exceptional voice like Vitas in the video above.
If you google techniques on "mixed voice" this will also be useful - this will allow you to sing much higher than you probably can at the moment in a strong register which is almost as strong as chest voice. It is tricky, but once perfected, is much more effortless than singing in chest voice and you can hold high, strong notes for a long time. In a nutshell, it combined the lighter head voice and adds a bit of 'chestiness' to it, to make it stronger. It's something that I have become better at in recent times and I can now sing a good mix up to B4 (C5 on a good day) which is not unusual for an alto/contralto female singer unless singing opera (in which case even a singer classified as a contralto may sing higher). Head voice can also be strengthened so it isn't so light and breathy, and I can get up to an F5 with that, with other male voiced people I know able to go even higher than that. I've taken voice lessons for a couple of years now, so you can PM me if you want more detailed info. I'm not an expert or teacher, but I have reasonably decent experience, and from a trans perspective.
And don't worry if your voice sounds a bit masculine, personally I find it interesting when the gender of the voice is ambiguous, or people gender the singing voice differently, but that's just me.
An interesting example is this - Zarah Leander (a woman, who as far as we know, was not trans) but when I've played this to people - some were convinced it was a man singing, others thought that it didn't quite sound like a man but was deep. But nonetheless, it isn't a conventional female voice, but an easily attainable starting point to sing for a male voiced woman.
As for singing teachers, I've had a male countertenor teach me before, and I told him my situation so he knew what the deal was with my voice - that's an option.
