The sequence doesn't matter so much to the ATC. You can call up on marshal, get instructions, call established (no matter where you are, just be more than 10nm away) and then instantly do platform and you'll get data suggesting you need to descend to 1200ft. Then just fly your approach and at around 10nm they'll continue with the Case3 procedure. 8nm is final radar contact, 5/6nm ACLS lock on and from that point you get your last DATA update and you can engage ACLS.
You can skip commencing and checking in calls and it will still work as described above.