I think I can relate to this pretty well.
So, about 5 years ago, I was accepted to med school about a month after I came out to my partner. I spent the previous 4 years busting my butt to receive that letter. The problem I faced was that I was in a very conservative part of the US and there was no way that I could have transitioned while in school. Way too much social stress and academic stress. I chose school.
Fast forward 5 years later. School didn't work out. I couldn't focus. I tried to become more masculine in hopes of overcoming my feelings. I gained a lot of muscle mass, and I looked really good for a boy, but I wasn't happy. I ended up taking a medical withdrawl and I spent the next year and a half working through things. I'm now 3 months into HRT and I've never felt so happy. I struggled a bit for the first month, but about 2.5 months in I really started feeling great about who I am.
It's your decision, but for me, I'm glad I ended up where I am.