This document summarizes a research proposal on word order and information structure in Esperanto declaratives. The proposal aims to study whether Esperanto word order results more from language transfer from speakers' first languages or from nativization of the language. The methodology involves experimental fieldwork with fluent Esperanto speakers from Romance, Germanic, and Slavic language backgrounds to analyze broad, narrow, and contrastive focus. The analysis will use an existing Minimalist Optimality Theory case study approach adapted for Esperanto. The project offers an original contribution as the first scholarly research on this topic and interface of syntax, phonology, and sociolinguistics in Esperanto.