Gcode Creation for CNC Router

I need an STL file converted into a Gcode file for Candle, compatible with a Genmitsu 440PRO CNC machine. The project involves routing a basic design onto hardwood for a folding knife. I have only a few different bits but after looking at the file U didn't mind recommendations on what to use. I can't seem to convert the STL in a way that it actually works on my machine.

Attached is a picture the basic idea. I have the STL and only need the left and right scales converted.

Requirements:
- Convert STL to Gcode
- Use Candle software
- Fit Genmitsu 440PRO CNC
- Basic routing design on hardwood

Ideal Skills:
- Experience with CNC machines
- Proficiency in Gcode generation
- Familiarity with Candle software