You can now download Sony Xperia Z3 Tablet Compact TWRP custom recovery. We also have Philz touch custom recovery that will allow you to flash any custom ROM with ease. You will also be able to use Sony Xperia Z3 Tablet Compact hacks on to it.
And once you flash the custom recovery on the Sony Xperia Z3 tablet compact, you will be able to root the tablet easily. Just make sure that install Xperia Z3 Tablet Compact custom recovery voids any kind of warranty on it as well.
The TWRP is a special type of custom recovery that allows one to interact with the device using the touchscreen. So compared to something like CWM, you get better user experience as you do not have fiddle around with buttons.