I have wondered about different options from the 3m77 spray - it makes a real mess going on sometimes and gives almost no working time. I am jealous of your easy access to good xps/depron but will give this a try on the Adams DTFB readiboard on my next project.
yup, 3m77 spray Is really messy, it is expensive, it's chemical, great for small children NOT haha
I tested different wood glues. They are all good and cheap no chemical, and continue right away with your work.
For the corners, like a L corner i use a hot gluegun.