I've gone for a mannekin a little under a metre, which (like the motors, propellers and ESCs) has travelled all the way from China.
Its steel pediment will do fine 'as is' measuring as it does ten inches square.
The tie-rods I bought locally are too short so I've ordered 2000mm M6 rods online.
Never thought I'd ever be ordering clothes for a mannekin online, but I've gone for an olive green flying-suit instead of the red, along with a full-face helmet.
(At least it won't be needing the school fees.)
I need to take him/her with me to a shoe-shop for a pair of boots, which will doubtless label me in perpetuity as the local crank.