Generally speaking, Jaksta and High Sierra are fully compatible and there are no inherent issues.
It has been some time since there were any, and even then it was only for a short while until we built in a fix.
If you do have problems, then it is more likely to be an issue specific to your system rather than a Jaksta/HS conflict.
To run Jaksta with High Sierra all you will need to do is a standard install. Nothing exceptional or extra should be needed.