Are we allowed to use custom things like toggles and multi-stroke commands? I can't see a rule either way, but I don't want to start learning to use them if they are banned.

There is a bug with IGT when you start a run from a quick restart. The timer seems to count the time from when you hit quick restart, to before it starts to generate the first floor. It adds 2-3 seconds to a run, to avoid this start a run from the breach.