What software should I learn for rebuilding 3D scans into clean freeform models for later CAD work?

I’m trying to find the most useful software to learn for turning 3D scans into clean, good-looking pre-processing models that I can later continue in CAD.

My goal is not just to clean up an STL. I want to rebuild scans into proper freeform geometry that I can then use as a base for construction work, fitting parts to it, or designing components around it.

Right now I have:

• QuickSurface Personal, but as far as I understand it, I can’t export the kind of clean surfaces I would want
• Access to all Autodesk software because I’m a student
• The option to learn free software like Blender
• Also SolidWorks for normal CAD work

What I’m mainly looking for is the best software to learn for this kind of workflow:

1. Use a scan as reference
2. Rebuild the shape with cleaner freeform surfaces
3. Bring that result into CAD and construct parts based on it

So basically:
What software makes the most sense if I want to recreate 3D scans in a clean way and then use that geometry for proper CAD design later?

I’d especially like to avoid wasting time learning something that is good for mesh editing, but bad as a bridge into real CAD work.

Any recommendations based on actual workflow experience?