Those scissor lifts are murder on the pinch welds (even with a rubber block). Be prepared for a larger then normal gap between the quarter panel and the door if you are lifting from the pinch weld at the bottom of the quarter panel.
At least that's my experience which is why I'm not the biggest fan of the scissor lift. I ended up with a 1/2" gap and it took me a while to figure out WTF caused it. I do like how you have it recessed in the floor.