Essential to the process of prototyping is revisiting the fundamentals as it appears the existing structure will support my own weight along with that of the IKEA folding chair. As a result I shall dispense with an additional layer of complexity in the shape of a separate flight-deck and instead run with what we have, and fit the motors underside.
This is also because the perforated sheet is supplied at 1000 x 2000mm, so that if it is divided four ways width-wise it produces four safety-grilles to fit round the chair. Each of the spaces surrounding the chair is practically a metre by a half, which will as ever minimise material waste... less always being more in this game.