Just updating this to let you know that this has been implemented for the next update. It's still going to take just a bit longer since I'm working out other bounding box issues, but I now have variables that track text bounds as the mesh reads out, the final bounds that text will have when it finishes reading, as well as an OnPrintEvent() that gets invoked every time a new character is drawn, so that can be used to update the size of a mesh.
-Kai