Sure. It's only one year, it avoids the biggest pitfall of the whole affair (people reacting to your change) and most importantly, you get mucho dinero for no extra effort.
If it was a permanent or longer lasting thing, hell no.
There are many, many things I don't want to deal with as a woman (certain bodily functions, sexism, thirsty fellows) but dealing with said things may also give me a greater level of understanding and perspective on life.
I guess relationships would be off the table for a year. I wouldn't want to find someone only to one day be like, hey, I'm a straight guy again LOL sucks to be you (whoever that would be)