Qiraat in Salaah

Q: Is it permissible to read surah qadr in the first rakat of salah and surah bayyinah in the second. What is the number of aayats that make a surah longer than another one?

Q: In the second rakaat of any Salaah, can a longer Surah be recited compared to the Surah recited in the first rakaat? Or must the Surah recited in the first rakaat always be much longer than that recited in the second rakaat? If so, on what basis should the length of a Surah be determined? 

Q: In a four rakaat sunnah salaah, if a person reads Surah falaq and naas in the first 2 rakaats, is it fine to read surahs before that thereafter, such as Surah wal aadiyaat and qariah?

Q: In a 4 rakaat Sunnah salaah, if in the first 2 rakaat one reads e.g. 1 page in each rakaat. Is it fine in the 3rd and 4th rakaat to read 1.5 pages? I.e more than the first two.

Q: Our local Imaam recites long Surahs in Maghrib Salaah and very short Surahs in Esha Salaah. My understanding is that it should be other way around. Please advise the correct procedure especially in the light of the sunnah of Rasulullah (Sallallahu Alayhi Wasallam).

Q: Is it permissible to read the same ayaat of the Quran in ones Salaah? E.g. A person learnt sabak, and wants to make it strong, would it be permissible to read the same sabak in all four rakaat of Sunnats?

Q: Should we recite any Surah after Surah Faatiha in the 3rd and 4th rakaat of Sunnat Ghair Muaqqadah, Sunnat Muaqqadah and Farz Salaah?

Q: Is a person allowed to skip one surah in namaaz?

Q: If a person recites from the middle of one surah in one rakaat and thereafter leaves out a few aayaat and continues reciting from the same surah in the second rakaat, will the Salaah be valid?

Q: Will it be makrooh if a person recites a few aayaat from the end of one surah in the first rakaat and recites a complete surah in the second rakaat of a fardh Salaah (e.g. the end of surah Baqarah in the first rakaat and surah Ikhlaas in the second rakaat)?