Welcome to PD's Pete ...
I cannot recomend any Books as such, however if you search on
Chieftain paddle tug in our PD's search function box.....have a

& you can read some 20 Postings on Chieftan builds or question/comments on the same
That should keep you going for a few hours.....
Keep us posted with your build remembering an image

confirm those proverbial thousand words
Derek