3D Model Preparation for Printing

I need an experienced professional who can prepare my 3D model from an FBX file for 3D printing. The model is intended to be an art piece, so the design and finish should be of high quality.

Key requirements:
- Convert and optimize FBX file for 3D printing
- or create the print parts from scratch in reference to the source file linked below.
- Ensure model is suitable for PLA material
- Deliver a model with a smooth surface finish
- Create the object plane from the current fpx file, if somehow my design is not printable.
- you should fit to the printed part measurement that you can find in the attached images

Skills and experience ideally suited for this job:
- Proficiency in 3D modeling software
- Experience with 3D printing preparation
- Attention to detail and understanding of design for art pieces.

my LUGO printer size is 215 x 215 x 300mm
https://formersfarm.com/download

the source file to preview;
https://autode.sk/3XoiHjv
but I will give you a download link once you are awarded.

My budget; 100USD
Deadline: Over the weekend KST about 48 hours for the G-code with assembly parts and placement.