FWIW, don't be afraid of high ABV. Most of my meads are in the 16-18+% range (d47 will hit 18+% with good nutrition and thermal management).
If you are just looking for a simple traditional mead 1 gallon batch, choose your desired ABV target, which will drive your SG (Starting Gravity). Add your yeast and nutrients (I am a fan of the TOSNA 3.0 protocol) and let d47 do its thing. 3-4 weeks later, you will have made mead. It will have what is described as a 'hot' alcohol flavor. If your sanitation was good, your nutrition was good, and you had some good honey, it should be perfectly drinkable.
At this point you have a choice to make. The simple solution (and easiest) is to set your gallon jug somewhere and let it sit for several months. The more complicated method is to get a second sterilized jug, and rack your mead into it, before sticking it somewhere to sit for several months.
At the end of aging, shove it in the fridge for a few days to finish clearing it.
The aging process will mellow the alcohol flavor and bring out the character of the mead. At that point you can choose to bottle it, or rack it into another gallon jug, and drink it.