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FYI, some jacking trays will not work with a bottle jack, especially if your car is lowered. It's iffy even with a stock height car. My adjustable jacking bridge is C-channel steel, allowing me to reverse it and allowing the bottle jack to sit lower.
I also use a 2 ton under hoist tri-pod jack from HARBOR FREIGHT. I had to replace all of the soft Chinese fasteners with grade 8 though.
I often start with my light weight low profile floor jack on the drive on tracks,,and then use the jack tray for jack stands. Depends on what I'm doing.
The jack trays that come with most 4 posters do no allow enough room between the tray and the bottom of the car to get a bottle jack in place.
I had a local welder weld 3" x 1" 1/4" angle on the ends of 8" channel to make a recessed tray so the bottom of the tray is dropped 3" lower the the standard tray. I think I tossed the guy $20 for it.