I’m not sure off the top of my head. Check the bimba catalog, they have the weights. We bought the cylinders from MMC but the specs are similar.
2x24 is correct. The hardest parts are making the cylinders go up at the same time and resolving the twisting, because the rods are free spinning.
Another thing to think about is whether you have enough air, and whether the compressor is strong enough to refill the tank. We are using a 2.5 gallon tank and a 100% duty cycle compressor.
I definitely don’t think this is the easiest way to implement a lifter quickly.