RI #1-2 are working and I am doing #3 also. Should I do the Advanced Lip Slurs (ALS) rolled in now?

You can always experiment with this. If it feels good, you can do it. It is absolutely NOT necessary to do ALS this way. RI and RO are independent exercises.Look at ALS as a kind of integration exercise to get the ' continuous flex'.. If you are getting more proficient in RO and RI then elements of both will already be part of your normal embouchure. It is much more important to listen for the 'snaps' then to try to play them rolled in.