I did it last year for the first time. And I had never written that much for anything. I did not finish but I did make 30,000 in three weeks. That is the usefulness of NANO. Being forced to break pasted all they blocks and distractions and just get words on 'paper' in large quantities.
You are to be congratulated for 30,000 words. That is tremendous! That's how the writing circle advertised it as well. To break out of your writer's block. I suppose the beginning might be a bit weak, but towards the middle a good idea might hit so it would get easier as you go along.