Some Questions for the PM tournament organizers out there

I'm going to be organizing and running a pm tourney in about a month. And I have a few questions:

1. Does the TO normally play in the tourney?

2. Do custom songs on the stages give off an unprofessional vibe? I plan to keeps stock stages.

I plan to use apex rules and build, but with a different logo, is there anything wrong with this?

Any general tips for running my first tourney?

Thanks.