Love is not shortsighted.
Of course not. It’s some PEOPLE that love that are shortsighted. 
1) Given Genisis 1:1, it is assumed that that point is the “start”. 7-day creation arguements aside, when did God create the angels? Did God create the angels? When did Lucifer fall from heaven?
Well, there’s considerable question as to whether God is even bound by linear time, so when God created angels may not be a meaningful question, and when Lucifer fell from Heaven would depend more on where he hit.
2) I am under the impression that sin is caused from temptation, and satan is the cause of the temptation. Can man be sinful without temptation? Can man commit sin without satan in the equation?
I don’t think satan is the cause of all temptation. If he could sin without a temptor, why shouldn’t we be able to? I tend to lean towards his just screwing with the big things, i.e. the fall, the temptation of Christ, and such. Whether that’s his choice or limitations placed on him would be up for debate, of course. Satan just likes hurting God, and the best way to do that is to hurt us. It’s like wanting to hurt Superman, so you kidnap Lois Lane. (Or Clark Kent on one occasion, which made for a rather unique ep.)
3) After all the events in Revelations, all the faithful live eternally with God on the “new earth”. Satan is gone at this point. Satan was able to “self-generate” temptation within his own being. Could that happen again? Is there any possibility of the events in the bible going “full circle”? I don’t think this would violate anything in the bible. If people are unable to generate sin within themselves, how was Lucifer able to?
I’m not sure that we’ll be perfect in all our actions once Christ returns, but I do think that once he does, it won’t matter. The ones that’ll be there will be the ones that know of sin, and will ask forgiveness if they should fail. Why would the forgiveness cease once He returned?
Of course, you do have the whole rebellion thing at the end of the millenial reign, but that’s something else entirely. 