Setting up the cartridge--Tips/techniques

Thanks for the feedback on cartridges for my Michell Gyro. I decided on the van den hul frog. It was not one of the ones i recieved feedback but I recently heard one in action and was pretty impressed. I am looking for some advice on how to set it up properly to get maximum performance from the set up. I have a couple of questions
1. Is the use of a stylus force gauge/scale critical or can I use the scale on the arm and tweak based on performance?
2. What position should I adjust the arm height to get maximum performance and avoid cartridge damage or record damage.
3. Are there other key points or techniques to consider

Thanks