How many Firouns did Nabi Moosa (alaihis salaam) encounter?

Q: A question regarding the historical details in the story of Nabi Musa (عليه السلام). 

Some people mention that there were two different Fir'ouns during the lifetime of Nabi Musa (عليه السلام): 

1. The first Fir'oun - the one who ordered the killing of the male children of Bani Israa'eel and who was the husband of Sayyidah Aasiyah (عليها السلام). This is the Fir'oun referred to in the verse: 

فَالْتَقَطَهُ آلُ فِرْعَوْنَ لِيَكُونَ لَهُمْ عَدُوًّا وَحَزَنًا 

(Surah Qasas)

They say this Fir'oun later passed away. 

2. The second Fir'oun - his son, whom Nabi Musa (عليه السلام) later confronted; the Fir'oun who opposed him, crucified the magicians and was eventually drowned. 

It is argued that the verse in Surah Shu'araa does not contradict this view: 

أَلَمْ نُرَبِّكَ فِينَا وَلِيدًا وَلَبِثْتَ فِينَا مِنْ عُمُرِكَ سِنِينَ 

because the second Fir'oun could simply be referring to the household and family of Fir'oun (i.e., both father and son). 

The question is: 

Do any classical Mufassireen confirm this view that there were two Fir'ouns during the story of Nabi Musa (عليه السلام)? 

Or do the tafaaseer generally state that the Fir'oun mentioned throughout the entire narrative is the same individual?

Being able to travel long distances in a few moments

Q: I have seen scholars saying that to believe a being can travel the entire world in one go is shirk. I have a few doubts about it. 

1. As far I know fast travelling is not even an attribute of Allah. Then why is it shirk? 

2. Even light can travel the earth in less than a second according to science then why did scholars call travelling in one go shirk? Even angels and shayateen can cover vast distances in a very short time. 

So in what context do scholars mean it?

Underage child coming out of ihraam due to sickness

Q: We came on Umrah with kids and my 6 years 8 months old fell too sick that we have to take him to emergency in Mecca in the state of ihram. 

We treated him and then my wife and my daughter we performed Umrah Alhamdulilah. But due to his sickness we can’t take him for umrah and he had to be taken out of ihram state to take rest. What should I do? Is Damm or Sadqah wajib on me?