Lol, ok. Obviously I was a tad bit cranky, so sorry for angry demeanor. For the life of me I cannot find how to make paragraphs either, lol.
I also forgot to mention something; Aemon, when dying, refers to how the wall preserves and how he should get back there to let Jon know something. I believe it might have to do with a dragon egg or perhaps one of the two swords I had previously mentioned. Of course, it was stated that the Golden Company is heading for Dany also and they were founded by Daemon Blackfyre's half brother who were all part targaryen so, they might have the Targaryen sword with them.
Last clear up point: In Dany's vision in the House of the Undying, she does see Rhaegar standing over a woman, but it is not Lyanna. He calls the baby boy the Prince Who was Promised and states that there must be one more. Implying that the boy is Aegon and his sister is the other, but that the dragon must have 3 heads. The woman in the bed is most like Elia. Unfortunately, Rhaegar's theory was proved wrong when Lannisters killed his children. So, I would assume that Jon, Dany and one more (most like Tyrion, though also most like he is not a Targaryen, will ride the Dragons.)