Given your apparent claimed knowledge could you please list available COT components and sources for such a glider.
Motor 25 kw
Controller
Interface
Battery system with BMS and charging system
How hard could it be?
UH

I think we're saying the same thing. For the most part, industrial-grade COTS parts for a glider FES-style system don't exist. They are either an order of magnitude larger (cars) or smaller (robotics).

BTW, don't forget the propeller. There aren't many out there for cruising at 50kts while only absorbing 5kW of power.