Ok we have oromagi with four votes and water with three if I'm correct? Would like someone to check to make sure. If that's the case and both confirm they're willing we can send oro as our nominee and water as the backup in case something comes up for oro.
As far as questions regarding the championship I'm happy to answer those I can and refer you to others that can answer what I can't.
To answer the ones oro raised: time requirement is minimal to play, though obviously the more you put in the better you're likely to do. There are a series of games played in prelims, semifinals, and a final round. Your fellow players vote on who advances with a panel of judges that watch all the games selecting a few more players that played well and that they thought were deserving despite not gaining the vote of their peers. If you do not advance past the prelims (I believe the "top" ~25% of players do) it's only a commitment for one game. I believe they'll send you a survey to gauge your time zone and ideal game from an activity standpoint. They try to match players up so that times line up as much as possible and people who post 15 times a phase aren't often paired with those who post way more.
Software isn't required, it's all hosted on their site. They have a feature called modbot that does things game mods usually do here (mainly send role PMs, process night actions, and count votes) which has a slight learning curve but is great once you learn. No wrong vote counts ever again!