Please help!!! I want to merge two hairstyles into one

I am hoping someone can do this for me, as I dont have a good mouse to work in blender, I tried doing it myself but the mesh looks blocky! it's two hairstyles...

1 : www.thesimsresource.com/downloads/details/category/sims4-hair-hairstyles-male/title/ade--caleb/id/1366772/

and

2 : thesimscatalog.com/product/newsea-mens-hairstyle-donate/

what I want is to lift the hair piece from over the eye the newsea hairstyle (2), and then I want to fix the backof hairstyle 1 so it's not buzzed, and is long like hairstyle 2 and merge them into one hairstyle mesh the areas im talking about are in red in the photos below





I basically want the front poof from hairstyle 1 (ade Caleb) to merge into hairstle 2 (newsea) seamlessly with the messy look, hair over the ears, no buzz, long in the back, no lines, and to have the thin realistic hair like strands, when I did it the mesh looked blocky and ugly, and i dont know how to fix it...i tried to work with it, but my mouse is a trackball and its not compatible with blender sadly! Please someone help me? I'll be so grateful!