I usually aim for 5-8% on my meads (maybe technically hydromels at those strengths), and I've done bochets a couple of times, and I still feel like I need to do a couple more iterations to get it dialed in. I think I'm still chickening out before it gets dark enough, but I think it does add some complexity to cheap Kirkland honey.
So I'd say: Make the drive and get some good honey ... but save it for back-sweetening. Bochet the cheap honey since the heating will probably volatilize the delicate aromatics anyway, and add the good stuff after you're done with the hot part.
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