The hacks should be distributed between the let's players. You've still got close to two weeks; send Arch a PM with your patch when you're ready. You don't need to chase the LPers yourself. If you want a specific person to play your hack though, that's fine.
So if you want Youtuber X to play it, you can get Youtuber X to play it.
Do note FEE3 is not a playtesting resource. That is your own responsibility, so make sure your rom isn't crashing left right and centre, looking like it's had a total of five minutes of work on it. Trust me, I know from experience.