Does this mean that you can add -mu to verbs as well? (Instead of putting kamu after the word)
Yes. "-mu" can function as an object pronoun, as well as a possessive pronoun.
Are there verbs in this section that only makes sense with me- or we are just forced to use me- because of the section?
Membangun (build) / bangun (wake up)
How many times does this answer change to include the final word to saya