Dear Mort Alz,
As a former Roman Catholic, I feel I can sympathize with your feelings and hesitancy towards conversion to the Holy Orthodox Church. Though I do not have immediate answers off the top of my head at this moment for your first and third of questions, I can offer you an immediate one for the second.
Though you bring up some really wonderful "idealistic" points as far as The Church being available for the entire world to provide Her Sacraments, the sad reality is that The True Church has never been part of the world. If you look at history, The Church has never really experienced an extended period of peace and harmony -especially with the world. Even during the times of the greatest emperors: St.Constantine the Great, St.Theodosios and St.Justinian The Great; there were great problems surrounding The Church.
Now, to put your point to the test; say we were in Sweden or in Saudi Arabia, is the Roman Catholic Church available to provide her sacraments everywhere where the people live there? Obviously not!!! We're talking about a mainly Lutheran and Protestant country and a muslim one that actually prohibits Christian Churches being built there. You see, I'm sorry, and I don't want to seem rude but I do want to make the point that your point is refuted in such a case. Now, your presupposition may apply even more in Sweden. Now, to answer your final question, what is the sincere Christian supposed to do? Well, since you presuppose that he's sincere, then, he will seek the Orthodox Church wherever it may be located. If he has to travel two hours: then so be it!! Close proximity should not make any church better than another. Because, if that were the case, then the Lutheran church, in this case, would be the true graceful model of the faith that you're talking about -and we both know that is not the case!. The United States was not founded by Orthodox Christians; therefore it never even "started" as the majority religion. I'm sure you can understand that. It was founded by various protestant sects and to this day, they form the majority of "churches" in the United States. Now, when sincere people want to find the True Authentic historical Early Church, they find it in the Orthodox Church and many times, they realize they're not necessarily accross the street. The reality is that immigrant communities have brought her to the U.S. Now, these people searching for Truth are many times willing to travel -I've heard as little as- 1 hour to 4 hours to the nearest Orthodox Church that they find. Now, that is more commendable and a much more witness to the True Model of Faith.
As far as the first and third of your questions, may I very and most emphatically recommend some reading? ( If you do not mind?) I feel that to give you a simple answer or even a paragraph answer, may not be suficient nor spiritually fulfilling (which should be the goal here).
In any case, and in case you can, here's a few books I highly highly recommend that you read which will answer many of your questions and even answer some you may not have at the moment:
1. Popes and Patriarchs: An Orthodox Perspective on Roman Catholic Claims by Michael Wheltonhttp://store.ancientfaith.com/popes-and-patriarchs-an-orthodox-perspective-on-roman-catholic-claims/
2. The Truth: What every Roman Catholic should know about the Orthodox Churchhttp://reginaorthodoxpress.com/trutiwevromc.html
3. Two Paths: Papal Monarchy - Collegial Traditionhttp://reginaorthodoxpress.com/twopaths.html
4. Orthodoxy and Catholicism: What are the Differences?http://store.ancientfaith.com/orthodoxy-and-catholicism-what-are-the-differences/
All of these are on sale right now and you can also find them in your local Orthodox Church bookstore.
I wish and pray that you may be enlightened and afterwards come to join us in the Holy Orthodox Church,
Nektarios in E.S.