I am very envious of that lift,
but I must ask how rigid is that shed floor, all the ones I have come across have been quite flimsy.
Might be wise to put some 3/4" plywood pads (even if it's just shuttering ply) under the feet to spread the load across at least a couple of rafters, I would be tempted to put a whole sheet under it.
If its as flexi under foot as the ones I have experienced the thought of the combined weight of the lift and a FZS1000 plus any forces by yanking on spanners, leaning on bench etc all going down through the feet just scares me, the risk of it punching through the floor and tipping over
Judge it for yourself, and again - Nice