No. That light draws 420 watts from the wall, so it's not really a 1000 watt light. 840 watts over a 5 x 5 should be OK, maybe a bit lite. Really depends on the quality of the LED, and I'm not familiar with this brand.
It's really hard to give a pot plant too much light indoors. The issue is usually heat, not brightness. The sun is brighter than any HPS, and plants love that.
Don't forget that much wattage/btu's will produce a lot of heat! You will need a fan to circulate air & help cool the tent! i have a 4x4x6 1/2 with "900 watts" & this blower & it gets up to the lower 90's!