"The Chiron build is quite involving. It will take you hours and hours every day. But the packaging is organized into bags so that you complete each element in stages. This is very useful as you can aim to complete 1-2 bags each day and then you know exactly where you left off. The manual is well though-out, but some elements you need to pay close attention to the pictures and come back. The more you build the better you understand the logic of how things come together.
The amount of engineering that has gone into this thing is astonishing (and I am an engineer myself). You don't get to realize this until you actually build it yourself and see how the gearbox and engine come together.
One think is for sure: you will not be bored!! Just make sure you schedule some time for your partner, or you will get carried away..."