Emma at 25" is larger than average and Rufus at 30" is extreme. You are on track to breed some enormous Poodles. This may increase their risk of bloat later in life. Why not take Emma to a smaller outside stud and work on producing more typically sized Standards?
COI is definitely something to consider, but it is no replacement for full testing. Both Emma and Rufus look very young. Were you planning to breed them soon? Given their sizes, I strongly encourage you to wait until after age two when you can get an official OFA hip certification on both of them. Plus, there are many Poodle health issues that we can not test for such as JRD, Epilepsy, Addisons. With these disorders, breeders are always cautioned to take a wait and see approach because they will often manifest themselves by age 3-4.
In the mean time, there are lots of fun things to do with your poodles: Obedience, Agility, Tracking, Therapy etc.
BTW... welcome to the forum!