I have access to CATIA but bloody hell that software is complicated. I’ll stick with Solidworks even if it’s capabilities (at least with surfaces) is lower.
Dealing with converting formats and getting your data where you can manipulate it is needlessly complicated. It isn’t a real CAD program, but consider looking at Blender to at least get the mesh into something more usable. Plus it’s free.
Good luck dude. If these ever drop into the $200 range I’ll definitely pull the trigger on one.