Wow, after all these years, you're finally gonna diy!
I'd say that rather than starting with a recipe, first you have to find the tobacco base you like, then add flavorings from there. Kind of like start with steak if that's your preference, and add flavorings you like that HHV uses - whether it be vanilla, caramel, etc. And another tobacco NET might be the base for your "chicken" recipe. But you have to find the base first. If you don't like the tobacco, no matter what you put in it won't do it for you.
So I'd get a sampler of Virginia, Burley, the basics, from somewhere. I use Stixx Mixx, mostly Am. Virg., but any NET company will have the basic tobaccos. For the adders like custard, vanilla, etc., FA or TFA will have those. But try a single NET first. Then try the adders as standalones. Like I always say, if a chef has never tasted garlic, how would he know how much to add to a recipe?
And you may find (like me) that you don't like to add anything to your tobacco after trying some good ones. Then life is simple.