You don't need to do any crossing if you don't need seeds. I'm assuming you know that both your parents are hybrids and the plants coming from those seeds may be quite diverse. It might be worth it to take as many females to flower as you can, choosing as many different phenos as you can. Also if you want to continue to propagate this new cross, you want to take clones from them prior to flowering so when you finally get some bud, you can select for the biggest, tastiest, strongest. Maybe you will find 2 or 3 of the offspring produce nice buds, you will keep and propagate those clones and can get rid of cuttings from phenos that maybe didn't do as well.