After 5 ctds [3 after battles, 1 on the turn of the opponents, 1 during battle] in a single day I've grown quite sick of my beloved Hellenic empire so I'm ready to make the switch to the Romani...

Just to go over it one more time

Step 1 would be installing Barbarion invasion,then following the instructions to make that one run with EB

Step 2 would be installing Alex and making that one work with EB

Step 3 would be taking over the world and fighting for the Roman Glory


Is step 1 optional or essential? I can't remember wether alexander was a follow-up or an expansion that did not need BI...