Is "is that" skipped after "what I am saying"? (Like, "What I'm saying is that we...")
Yes, that's correct. You can consider "is that" to have been omitted from "what I'm saying [is that] we see how it goes later on." It is common to omit "that" while speaking. Ex: You're saying [that] you're going to be late? Ex: Can you bring me the book [that's] on the table?