Chrysene- those are heartening things to hear, as to your plans. I'm also really glad that you have a dad you can confide in and it sounds like make this big decision with support.
I'd just gently add the your #2 - assessing the likelihood of success- is a dangerous measure of making this decision. Put simply, another person can never truly determine the success of an alcoholic's sobriety. It's always up to that person, and while I, for example, don't live in fear of drinking again nor does my husband or my family and so on - it's something I am fully committed to no matter what. In fact? It comes before everything else, even my husband whom I adore.
Also, truthfully, you can't determine #1 either- speaking for myself and most alcoholics I know, the lengths to which we can go to convince others we are truly willing to get and stay sober are staggering. And lies, until we actually do it or keep sober.
#3 is the one you get to decide, truly, for yourself and your life.
Take care.