As for maximizing sweetness, I think you want to get away from the Beams altogether and get a wheater. That's where you get maximum sweetness. I'd recommend Weller 12, Old Fitz BIB or Very Special, or even Maker's Mark. Perhaps one of the younger Van Winkles. (The older ones are still sweet, but the barrel flavors start to predominate and I think for an after-dinner drink you may want something cleaner.) If you can find the Old Fitz BIB (green label), that might well be exactly what you are looking for. When I think candy sweet, that's the one that comes to mind.