Learned a lot here about airframe geometry and the mounting of motors, beside the practicalities of ground-handling.
Looking at it now though I could go yet smaller and lighter, but that might be deferred until after power-testing with this one here.
Hard to say whether these eight legs offer any thrust-advantage over four mounted with paired propellers, but without setting both up on a test-rig then it's anyone's guess.
Certainly light enough to wander around in, and the ESCs are unlikely to add much weight.
Batteries will be something else though, but they're a job for another day.