Well to tell you the truth I have not dealt withn that issue before since most of my experience is with electrics and acoustics and jazzy-dazzy guitars.

The classical guitars I worked on over the years had the strings on them and I don't remember ever restringing one. This does make sense though. Most are plastic strings nowdays and they are available I think in different guages or thicknesses.

This would make a huge difference in the tention on the strings by the time you reach the tuning. I would certainly use a lower tension string on a lesser expensive guitar to not warp the neck. Higher tension puts a lot more tension or tightness to the neck. You will notice that the lower tension strings sag more floppy like my ears. The higher tension is far tighter like my underwear and harder to play but a cleaner higher frequency pitch that some like better.

I would like a medium tension for the best of both sides of this. A very good question. I never really noticed that but it makes sense. It would work the same way the steel strings do. There we go, we learned something together on this one.