Making different backgrounds for the house is on my todo list for sure!
I'm not the best at estimating scope/length but I suspect most chapters will have a higher word count than the first chapter, as each one will have a little subplot that can be resolved in different ways and lead to some variations. There'll also be some different scenes based on the two routes you can choose between and which love interest you pursue, and I do want to include a variety of endings based on all your choices, so I think the game will have a pretty long span if you replay it and explore the various options!
The first chapter itself is also likely to be longer than I expected, and the demo probably takes up half of it, rather than most of it.
Thank you for the kind words and for playing the demo :)