Modify & Slice Existing STL Model for Large-Scale 3D Printing

I have an existing STL model that needs to be prepared for large-scale 3D printing and assembly. my fixed price 50$ Requirements: Analyze the provided STL model. Split the model into multiple printable parts according to size limitations... (Budget: $10 - $30 USD, Jobs: 3D CAD, 3D Design, 3D Modelling, 3D Printing, CAD/CAM, Fusion 360, Product Design, Solidworks)