If you can let it overnight they will inflate twice the size and the cooking will take less, if you cant then a couple hours like 4 - 6 hours. Add just a teaspoon or so of sodium bicarbonate as well.
I love how you appreciate everything and look at the future when it comes to the rooms that are yet to be ready. Beautiful home ♥️ my favorite part was the backyard and the fruits/veggie garden!