A lot of people have 'unbalanced' bodies, long legs, short torso or opposite and so on. So, balanced is number 1.
Also, like previously mentioned, size of joints and so on.
Finally the most important thing is, are you able to concentrate on gaining muscle with the help of anabolics - constant training, eating, minimal alcohol. poking around the clock and all the other shit that comes with it.
It's actually pretty hard work...
Is it worth it?
Only you can answer that.