Ohm's law has nothing to do with it.
Your power supply puts out 1.4A. The datasheetdatasheet says your LEDs are designed to operate on 700 mA to a maximum of 3000 mA. The power supply current falls right in the middle of that range. Make sure you have enough heat sink capacity for each LED and you should be fine.
Your power supply can supply 1.4A between 23 and 69 volts.
Your LEDs will have a forward voltage of about 3 volts at 1.4A. That's a minimum of 8 LEDs in series, or a maximum of 22.
Any number of LEDs between those two extremes will be OK.
80% of 96 watts is about 55 volts at 1.4A. That's about 18 LEDs.