Get your school work etc done first mate. BUT, even if the model isn't finished by the closing date, enter it anyway, as it is at that time. It'll still be part of the build, as you've certainly partaken and joined in 'the spirit of the thing', so it'd be a shame not to include it anyway.
That also goes for anyone else who thinks they won't be finished on time. OK, your model(s) won't be in the winning categories, but they'll be there, which is the main thing.
Remember, this is probably the FIRST TIME this sort of thing has happened, especially on a world-wide scale, and it's happening HERE!
Personally, I think the efforts, mutual support, help and encouragement have been outstanding, and I for one can see improvements as the builds progress. with the shared knowledge on history and background benefitting all.
Well done so far to all concerned, competitors, advisors and critics!
Terry.