My experience with bubble yielded a candy that was very rough in texture. What size screen did you use to make your candy? That may be the key factor here. It's likely that my bubble had a lot more than just glandular material in it, which did not melt in the syrup.
I still maintain that using BHO is better, but I am open to the idea that my bubble hash may not have been ideal for this purpose because of how it was made.
I like your style. BHO for sure works awesome. Though, if I can help you get the same results, I bet you would love saving some cash and the extra work/time.
I make my Kief with the dry ice method. I use both the "red" bag (I believe it's 180) and my tumbler which uses a 220 screen.
I make sure to put in the Kief when the stove is off. I also make sure to sprinkle it so that there is no clumps. Once the heat is applied, I do mix it quite often to ensure it all melts into the sugar. These days I add no food color and no flavoring. El-natural is some of the most tasty candies. They have a very beautiful color as well. They kind of come out golden looking.
Experiment some. Its worth a few tries to dial in the method. Because in the end, if you can eliminate BHO it will save you tons of time and a little money.