Am looking to light up the front door area of an old state house (1.5m wide by 1.5m deep, 2m high), looking at an Orbit Bulkhead LED Oval 8 Watt lamp https://www.mitre10.co.nz/shop/orbit-lighting-bulkhead-led-oval-8-watt/p/269856 ,Mitre's 10 web site indicates that its 850 Lumens however the box indicates 550 Lumens, is this enough Lumens in a space like this? just wanting to be able to see enough to unlock the door with ease and not trip on the step.