I have found that some guitars respond better to low/medium strings while other guitars respond better to hard tension. Only way to find out what you prefer for that guitar is to try. Brands to try is Augustine Blue/Imperial, Savarez Corum New Cristal, La Bella HT (though this is probably closer to MT)...
Carbon strings have a thinner diameter and higher tension. They are louder, more sustaining and more responsive, but they may have less tonal variation and a different timbre. I enjoy them from time to time but usually return to nylon for their moral traditional tone.
"Success grants its rewards to a few, but is the dream of the multitudes.
Excellence is available to all, but is accepted only by a few." - Christopher Parkening