What a fantastic trip you have ahead of you. It is a great pity there are not more real travellers like yourself who are not terrified of every shadow and brainwashed into prejudice against destinations such as this. Iran must be one of great travel destinations of the world considering its incredible history and the number of civilisations and different empires who have contributed to its rich culture over countless centuries. Imagine vegetating on a beach in the Canaries and missing this!
I found this to be equally true of Syria when I travelled there earlier this year, a truly great experience, my only disappointment being that I could not find anyone daring enough or interested enough to go with me so I went anyway - and of course as is always the case travelling alone is when you meet up with the most memorable of people, natives and fellow travellers alike. I was inspired by your own advice on this site to visit the exquisite Iranian Mosque while in Damascus, which I might have missed otherwise. It was noticeable that large numbers of Iranians, mostly pilgrims I guess, are in Damascus. I hear this is because Syria is one of the few destinations that welcome Iranians, but also because of the country's wealth of religious shrines. As a secular state Syria is probably somewhat different from Iran which obviously isn't, however I have heard that the people in Iran are if anything even more friendly than the Syrians, and if that is true then you are in for a real welcome. I met up with a French traveller afterwards in Lebanon, who had spent a month travelling in Iran. He found Tehran itself a quite ugly place dominated by traffic, but the rest of the country mesmerizing. Apparently many young Iranian girls now dress in a western way though behaviour is still governed by modesty and morality as would be expected in what is a traditional society.
I had initially planned to go to Iran and opted for Syria instead after the violence flared up over the whole Ahmedinijad election which was (supposedly? ) rigged (can we know this for sure?). I plan to go next year now, so please let us know how it goes. My only fear now is that the country will suffer a military strike from Israel, acting as it does consistently outside the bounds of all international law and immune as it is to all sanctions. This action when it happens, as is always the case with Israeli actions, will have the backing of the USA and will provoke an unholy proxy war that will destroy everything.