Hello there, thanks for getting in touch. I can certainly understand wanting to wait until the whole game is finished and I know a few people are planning on doing the same, so you aren't alone in that. ^_^
Yes, I think the game will be at least 600,000 words, perhaps longer - it seems I'm not very good at estimating the word counts for the routes. ^_^'
Many thanks for the well wishes, I hope you have a good 2021 too!