Do you believe in the Real Presence of Him in the Eucharist?
For most of my life, yes. I do have my struggle with doubt and that hasn't gone away. But I've been back at Mass since the dispensation ended.
Still isn't relevant. There's precisely one valid way to be a Christian /Church pastor, and it's to be made one /appointed by an already valid pastor, the most recent link in an ancient chain that reaches back through time all the way to the hands of an Apostle.
Orthodoxy and Catholicism are the only options.
(There are as I'm sure you're aware a few tiny traditions that could sustain a claim to trace their pastoral lineage back to the Apostles but the Orthodox and Catholic churches are the big ones.)
Sure it's relevant. You're saying the only option lies via Catholicism or Orthodoxy on the one hand, and that you go with the Catechism in the other. The Catechism leaves open the hope for salvation for all Christians (much to the dismay of traditional Catholics who would choose the Baltimore Catechism, Pope Pius X's catechism or even Ott's Fundamentals of Catholic Dogma over that modernistic new catechism).
This is a conundrum. If you believe all that the magisterium teaches, who do you go with?