Things will turn out pretty well, light-wise, using the manufacturer's recommended hang height and dimmer settings.
I agree your plant looks great and, dollars to doughnuts, it would do better with more light. With LED's, it's not easy to give a plant too much light, assuming that your grow environment is squared away. Many grow lights, especially the smaller ones, don't generate enough light across the canopy to raise the light level to hit the "light saturation point" for cannabis.
If you spend the $35 or so on a light meter, you can adjust the hang height and dimmer setting to get your plants to LST. In cannabis, the LST is 800-1000µmols (micro moles).
Plant quality, plant yield, crop quality, and crop yield increase as light levels increase. Research has shown that it is almost a linear relationship. If you're looking to compare the increased cost of electricity vs increased value of the crop, the extra cost of electricity is less than the value of the increase in value of the crop.
To get your plants to the light saturation point you can use a meter and set your lights to ≈900µmols and then "adjust fire" or use the manufacturer's recommended setting and adjust fire or just turn it up to what looks good and adjust it in.
My recommendation is to use a meter. I use a PAR meter but I have tested a Uni-T lux meter on a variety of lights and the conversion factor of 0.015 is accurate. That is, if your light meter indicates 1000 lux, that's a PPFD of 150±µmols. A PAR meter is very accurate and will cost you >=$300. A light meter is very accurate and will cost you $35.
In short, your plant looks great, check out the manufacturer's recommendations re. hang height and dimmer setting, and a PAR meter or lux meter will "remove all doubt".