as it has already been correctly said, there are three successors of Peter in Rome, Antioch and Alexandria. Curiously enough the legimitate and ordinary bishops of these sees are in three different ecclesiastical communions... (since I consider the Greek Patriarchate of Alexandria to be a temporary replacement until we overcome the divisions with our OO brethren; anyway the OO churches have so few and marginal differences that I feel them more as schismatic, but not heterodox...). Maybe you should think of Peter the same that has happened when Judas Iscariot betrayed Jesus: Peter found it necessary that his episcopal ministry be replaced by an other disciple. That took place when the Roman Pontiff left Orthodoxy: his role was taken by the Ecumenical Patriarch of Constantinople, our new "first among equals". So, definitely, the bishop of Rome is not "constitutional" to the essence of our Orthodox Apostolic and Catholic Church: our true Head is Christ himself!
Maybe you should also remember that some private devotions, when they aren't *contrary* to Orthodoxy, could be legitimate in our Church (for example the Rosary according to st Seraphim of Sarov in the Western Rite). I suggest you to attend a Western Rite liturgy... this way you could find a more familiar home within the Orthodox Family. Many aspects of the Roman Rite have been restored to their original purity in the Western Rite, so you can have at the same time a fully "Roman" liturgy and a fully "Orthodox" ritual for you. Since you quoted the OCA, I understand that you must be American, so you have this great possibility which is completely absent in my country (i.e. Italy).
Anyway, good luck for your travel - independently from its destination!
In Christ, Alex