So quick question I have nearly beat Emelita's route and am gonna go into new game+ for Yuela, and Serawi routes (I play from least favorite to favorite). So my question is if I carry over my level will the enemies and dungeons at the start scale to my lvl? The reason I ask is because I really enjoy the combat and grinding so if it doesn't scale I will likely only carry over my santoril and materials.

Enemies are normally capped by map level + 10, so for most of the game you will outlevel them by far.
You can select "uncap monsters" option in the beginning, which will raise their stats, although that might make them annoying rather than challeging. And they give XP like they are still on their base level.