Another thing to consider - your persona will determine the ideal environment for you to perform in, and the environment in which you perform effects your persona.
The more you busk, for example, the louder and more gregarious you will tend to be. You need to be to draw the crowd and keep their attention. Most of the good buskers I know are more comedians that do magic than straight up magicians.
I had to admit to myself that busking was not the environment for me - I'm not horrible at it (any more) but I'm not great. Put me on a small stage with up to around 100 people in the audience and I shine. Bigger than that and I feel like I am struggling to reach the back of the room.
I can work walk around, but it's not my best place. Ironically, given my lack of skill with busking, when I start doing a routine while doing walk around I have the habit of drawing everyone up to me, so it ends up being a parlor performance without a stage. Few months ago I did an anniversary party in NYC. I did a couple stand up pieces then walk around the tables. I meant to go table-to-table, but I ended up doing two half hour sets, one on each side of the room.