Godin ACS SA Nylon string gauge

I just bought a used multiac and the guy who sold me it gave me a set of Hannabach strings that I tried to put on the guitar but the tension seemed too high.
They're more thinner than the ones that came on the guitar but the tension seems way too high!
These (http://www.stringsandbeyond.com/ha725goclgus.html)are the strings but the Godin recomends a this (http://www.godinguitars.com/godinstrings.htm)strings (see bottom of the page).

Can the Hannabach damage the neck? Do I need to adjust the truss rod to put them?

Thanks.

I don't think the strings will damage the neck. You may need to tweak it a bit, but I'd just go buy some strings you like and at a tension you like.

Congrats on the guitar. Those are really sweet.

Ok. I just tried again and it worked fine!
Maybe I was sleepy last night...