Larrivee makes fantastic guitars. And the 40 series is something extra special. I own two Larrivee 40's dreads.
John Pearse strings are great and sound excellent on Larrivee's. But Dr. Sunbeams usually sound especially great on Rosewoods. It does on my rosewood. Dr. Sunbeams do not sound as good as JP's on my Walnut. However..I would recommend you trying the .13 to .56 on the Dr.
Larrivee's are built for .13teens. That is what they expect that guitar to be used with. Which means the maximum tone value. And Dr. Sunbeams...feel like they are less tension because they are round core. So that should not be a problem.