Rick ... I hope this gives you a laugh.
Ralph Moore, was a prolific rose breeder and often would run out of root stock to use for testing of his seedlings that he wanted to bring forward, so he would graft them to many of the mature roses at the nursery so he didn't have to wait for more root stock.
It was a hoot to visit the nursery and see twenty or more new roses grafted all over one mature rose plant.
Of course, his goals were different than yours, but the results were truly something to see.
I hope your grafts take and you get to enjoy your plants.
Smiles,
Lyn