Hi @BlazingPegasus. Many of us out here have multiple addictions that we are working on, or have worked on in the past. I would suggest quitting one at a time in the order of importance, or maximum negative consequences. But you have to be very aware not to ramp up other addictions to compensate. I quit at sex addiction years ago, and alcohol moved in to replace it and more. All IMHO.
FYI:
Here is a useful thread on getting through early recovery:
(Surviving Alcohol Withdrawal/Early Sobriety Techniques)
And recovery-related links that members have posted: