I wouldn't make anything of it. He answered your first email and said he'd be happy to meet you. I'm quite sure he is not snubbing you now. It's good that you have a sense of urgency, but do keep in mind that entering the Orthodox Church usually takes months (and for some people even years!)
You do not need to schedule in advance with the Priest to attend a service. Why don't you simply begin by going on Sunday, or any other day when there is a service? One way to get noticed is to attend from the beginning of Orthros, you will surely meet the Priest and other people. Since you are visiting a Greek parish, you can go to http://ematins.org/matins.htm
and get a Greek/English translation of Orthros for almost every day.
"Do believers prefer to go to parishes with the priests they like? If they don’t like priests, do they want to change parish to worship?" One lovely thing about the Orthodox Church is that the focus is on God, and the charismatic personality of the Priest is not emphasized.
"Do believers tend to feel priest monks (e.g., very reverend Archimandrites) more spiritual than married/part-time priests?" Another good thing about the Orthodox Church is that our married Priests can offer spiritual direction to people who are married and/or living in the world. A part-time priest may have great insights about how to grow closer to God while working a full-time job. Our monastic clergy are a great treasure but they are not somehow "better".