Peter
I considered AS-7532B midrise lift myself , nice bit of kit, had an idea to buy, or make, a fancy work chair to go with it.
In a mad moment i decided to modify the roof to 3000mm head height, a gamble that paid off so i went for the full height lift instead.
Best of luck with your new lift if you go ahead, they are awesome, i worried about stability and workmanship before it arrived but i can confirm for the price they are a nice bit of kit.
Ask them about hydraulic oil, mine took 16 litres , i bought 20 online for about £30.