Persian Carpet

I recently purchased a Persian Carpet Flower. I’ve got mix from planet desert, along with soil topper volcanic rock and a suitable pot. I have a 15w LED Sansi bulb the along with a lamp fixture. This will be a single indoor plant setup. My question is how far should I position the light from the actual plant? And is this bulb enough to keep it healthy or do I need to wattage up? Any input would be appreciated on keeping it healthy as well as this is my first time.