It will drive six strips. As @HolyAngel said the driver will run hot at full load.
Have a look at the load spec (output load vs temperature) in the specs.
The left shows 100% to 50C ambient (surrounding air temp.), then it starts to drop.
The right side shows load to case temperature. This shows 100% load out to 90C case temperature.
So if you can keep the case temp under 90C you can drive 100% power.
And you can infer that the case temperature will be 40C hotter than ambient - at least at 50C ambient.
To me, that is heatsink and air flow. That’s not too difficult as we are talking about 35 watts of heat.
(edit) Sorry, you get to the datasheet from the Digikey link.
Don’t touch the voltage adjust. Use the current adjust for the power control.