DXF to G-code vs hand made toolpaths in CAD/Rhino3D

Good evening all,
For starters, Thank you for being here.

I'm running a small engraving/carving machine. Controller is from
http://www.stepper3.com/33.htm. I'm using Kcam-4 with this controller
and Kcam seems to handle most DXF conversions with minimal hand work.
I.E. rewriting g-code. I'm also looking at a program called
DeskProto. Rather pricy for me right now. I have Rhino3D and Autocad.
And was wondering if it may be easier to just simply draw tool paths
myself for objects created? What do the more experienced people do?

TIA.
Neil