Hi there,
Well I've battled (and gained victory over) an eating disorder too, over twenty years sobriety now and also three weeks and three days off of cigarettes.
You asked what other addictions you might form. I have found (for me) that any addiction is simply a solution for a problem I have not yet addressed. When addressed, the need for a substitute addiction resolves itself. When unaddressed, I will find something else to become addicted to. Today, when addictive behavior kicks in, I view it as helpful as it indicates that there is a problem that requires a solution and I can look for it, find it and address it in a more healthy way.
Let's keep on this cigarette thing together eh?