Unfortunately T isn't as easy to play with as E is. Many of the effects of E are reversible or are something that could be lived with. T is far more powerful and it's one of the reasons why FTMs are able to transition so well with it.
Voice surgery isn't a walk in the park. After you have it, you still need to use a trained voice in order for it to sound properly feminine. Learning to do this can take months and for the first few years, you have to be aware of the proper voice to use. An additional complication is you can't control the voice you get off T. If your voice should break while it's dropping. You will have to remain on T long enough to get through the break or live with a broken voice. One forum member attempted a little voice change and this soon became the problem.
Why am I talking about voice? Hair loss from T is temporary if you discontinue T as soon as the hair loss starts however if you remain on T, the hair loss will become permanent. If you need to remain on T long enough for your voice to stabilize, you may experience excessive hair loss.
Facial hair removal isn't fun. Should you need to do electrolysis, just the face can require 200 hours of treatment at an estimated $100 an hour (more or less depending on where you get it). I was fortunate in that I was able to handle the pain without the need for medication but others need nerve blocks just to be able to tolerate treatment.
Some FTMs develop an Addams Apple so you might need to add that to the list of things that might have to be undone. It will leave a scar on your neck somewhere though placement will be determined by the surgeon that you use.
Depending on your age, some changes in your facial bone structure could take place. If this happens, you might be looking at FFS surgery which is very costly and hard on the body. Some surgeries run into 12 hours for more extensive work and costs in the neighborhood of $50,000 U.S dollars.
Consider all of these factors before starting T and if you are willing to live with all of these results, T is the correct medication for you to be using. If you just want a feature or two, you should very carefully consider if T is the correct medication for you.