Convert & Translate Math PDFs

I have a series of mathematics lesson hand-outs currently locked away in PDF format. I need each lesson recreated as an editable document with Spanish translations added, while preserving every formula, diagram, and specialised symbol exactly as it appears in the source... (Budget: $250 - $750 USD, Jobs: Editing, Google Docs, LaTeX, PDF, Proofreading, Spanish Translator, Technical Writing, Translation)