Hello Michael, welcome to Susan's!
Sounds like you have some goals - I think that's great, to own and plan your future. I found it very helpful to be able to interact with people here with a wide range of experiences.
I'm sorry to hear your mother is apparently transphobic, but I have seen surprising results when people have the difficult conversation and come out to their family. Cases where someone may seem very negative on a topic but is completely supportive for someone they care deeply about. It's called unconditional love.
There are no absolute guarantees with the adventures of life but I wish you the best. If you plan carefully and take charge you will do well.
Kendra