Yes, that's an ideal application of ZIPmagic DoubleSpace.
Just get an external storage of equivalent size to your tablet's SSD ready, such as a 16 GB thumb drive, and plug it in.
Fire up DoubleSpace, choose your USB drive as your Undo Disk, and begin compression.
ZIPmagic DoubleSpace will recompress all of your data and merge all your updates back in.
You can repeat the process as often as you like (for example, once a week) to pick up the slack.
You can also use DriveSpace to compress new files on your disk since your last DoubleSpace pass, to buy more time.
DriveSpace and DoubleSpace are mutually compatible and they play well together.
Please enjoy your space savings