So I did what I said and cut the recipe in half and let it steep for a week. No hot water baths, just mixed and steeped for 7 days, with a shake or two each day. I also did this with about 30 other recipes and single flavors (will write something up about all of them eventually)
I used a 70/30 base, 12 nic
2.5% Graham Cracker
2.5% RY4 Double
5% Brown Sugar Extra
I must say, this tastes like something I would buy from a vendor! It's very smooth, quite sweet (Not overwhelming), with a soft caramel-graham finish. I don't get any tobacco from the RY4D (May add TA later). Everyone around me says it smells like a bakery when I'm vaping it. If you like the original recipe and have some patience, try cutting it in half and letting it steep in a cool dark place for a week. Thanks to the OP for the original.