The slates are not agency Standards, nor even mentioned in the Standards. I do refer to them to make sure I don't forget to cover any required skills. Using them as an exact template for how the class is supposed to be taught is, well, not what I or anyone at my shop does. That is one of the things I really like about teaching under SDI. SDI instructors have a LOT of flexibility in HOW to teach the class. There is no REQUIREMENT for 4 entry and exits in confined water, for example, even though exactly following the slates would have that as one of the results. When were your slates printed, by the way?
As I have said several times. I came into my current shop assuming that all our OW students would have 2 days of pool time. I was shocked when I learned that's not how they (now we) do it. I was highly skeptical that decent divers could be trained with only one pool session. But, I kept an open mind and watched and learned. Now, after working for the shop since the end of April and participating in classes for, I don't know, 50 OW students(?), I can see that the results speak for themselves. To be clear, I feel like Amanda Baker is the Master of preparing students well for OW checkouts in just one pool session. I am still learning from her every time we teach. John has been out of the water since I've been at the shop, so I have yet to see him in action with OW students. And probably won't any time soon, as he generally teaches tech and Amanda generally handles the OW training (with help from myself and others).
We do not add Rescue skills to the OW class. We do not add freediving skills. So, we would certainly be able to accomplish all the CW stuff in less time than what you need. That said, I personally am skeptical of adding that much to the OW class. Not without also adding a number of dives beyond the required 4 OW dives. They have more than enough to digest without adding all those additional skills. But, that is just my opinion and, like when I came to my current shop, I am open-minded about other ways of doing things - especially if they come with a track record of good results.