Hello Obama it is so far understood that Siddhartha Gautama before he became “Buddha” or the enlightened one was born in about 563 BCE in Lumbini, Nepal. He was born into King Suddhodana Gautama and his queen Mayadevi, rulers of the Shakya tribe of Kapilavastu region near Lumbini.  The fact was that the life of Buddha was
not a myth but reality also comes from one of the inscriptions in the pillar erected by King Asoka in 239 BCE in Lumbini. The inscriptions read “Here was the Enlightened One born”.Now coming back to your views. I learned some of the facts which you said regarding Siddharta Guatama visit to the Kathmandu valley during the rule of the Jitedasti whom you told he was a 7th Kirati king. But you said that Gasti was a 14^th and last king of Kirat ruling the
  Kathmanduvalley.

But while working with the research I found that it was King Sthunko who were 14^th Kirat king and it was during his rule that the Indian Emperor Ashoka came to the Kathmandu Valley with his daughter princess Charumati. It is also mentioned that it was during his stay in the valley, he had built four stupas in four directions and one in the centre of Patan. He had arranged his daughter Charumati's marriage with a local young prince named Devpal. The website on the other hand claimed that Gasti was 29^th Kirat King, the last one before the Kirats were overthrown by the Licchavis in around 330AD. Now is this true that Asoka also has visited the valley and built the stupas as claimed?  The fact is that he reached Lumbini with the inscriptions from the pillar. So did Asoka also came to the valley and built the stupas, and arranged his daughter marriage with Devpal? And was it during Gasti or Sthunko that Asoka came to the valley?

Anyone please help me if you have any inputs/information about these.

This is getting quite interesting cause then I can explain to the class about Siddharata Gautama visit to Nepal and the Asoka commemorating the stupas that evidently will reveal that Buddha was not a myth. This will also help me to explain to the class on how Nepalese shape this religion which is one of the dominant religion in Nepal but hardly cease to exist in India, the very place where Lord Buddha gaining enlightenment had preached his doctrines before he died.
here’s my source:
“Kirat Period.” Kirat Rai Association Hong Kong. 24 Feb. 2010
<http://www.kiratrai.org/hp_period.php>