Nah, I use my molasses for rum and grains for whiskey.
Sounds kinda good tho, send me a jar and I'll give you reviews. lol
Molasses is such a strong base that I really couldn't see the grains contributing to too much flavor, but I could be wrong because I've never tried it.
I do a rumskey with 30% corn 30% oats 30% barley and 10% molasses.
It's really nice and has a recipe on HD called sweetfeed whiskey. Good stuff!
Good luck and let us know how you turn out.