, Firstly, I find it very disturbing that you've interpreted the noble ayahs in line with the deviant sufi and barelvi aqeedah. Please refer to a proper scholar and In Sha Allah, make a recourse towards the sahih aqeedah.
The noble scholars of the old and the new of the Ahl Sunnah Wal Jama'ah are unanimous that the Throne was created first. And that the Throne was on the Water.
Secondly, The blessed Prophet of Allah, Al-Mustafa Muhammed (Sallallahu Alaihi Wasallam) is only a Human being. He is not physically made of light. (Nauzubillah)
Prophet Muhammed (pbuh) is a man and a son of Adam (pbuh).
Thirdly, The Prophet Muhammed (pbuh) is without a doubt a Light (noor). But
this is the Light of the Guidance
(hidayah). Just like the Qur'an is a Light (of hidayah). It isn't a physical or some kind of a spiritual light.
Fourthly, The Angels were created from Light. (Sahih Muslim)
All the prophets, including Muhammed (pbuh) were sons of Adam (pbuh) and Adam (pbuh) was made of Clay.
Fifthly, to connect the description of the Quran with The Big bang theory is not at all advisable according to many scholars. Because the Qur'an is independent of any scientific theory. in fact it is limiting the Qur'an. The description of the Qur'an is very unique and Only Allah Knows best how the Universe was created (Quran 18:51)
Sixthly, the topic of discussion here was about what Allah created first, The heavens or the Earth. Not about what is the first creation of Allah.
Because it is confirmed from the Sunnah, that the creation of the Throne, The Pen, The Water predated
the creation of Heavens and earth.
Allahu Ta'ala Aalam.