I also bought Honey Jar from EL. I have grafted Sugar Cane, Autumn Beauty, and Black Sea to it. I plan to add more varieties. You’ll be fine planting now, just mulch with wood chips about 3" deep on the surface of the planting hole and give it a deep watering after planting and it should be fine.
If you are interested in learning to graft, I highly recommend it. It’s lots of fun and very satisfying to see the results.