Seriously doubt you'll get much above 18% with K1V with as little nutrient as you used (or listed). You would need to oxygenate/aerate and degas the living snot out of the batch to get above that. Even then, it's possible that it will just quit at/around 18%.
Typically, to get above 18% you do a stepped honey addition schedule. Basically, you start off with a lower OG and add honey as the yeast goes through the original amount. I would have held off on adding the cherries until the batch was finished fermenting too. Using them when you did means that a good amount of what they would add has been blown out the airlock already.