Qiraat

Q: I heard in salah, errors to do with waqf dont matter. Does this apply to stopping in the middle of a word and then resuming?

I attempted reciting waladhaleen twice and every time between the ‘leen’ part, my voice stopped because of an obstruction in my throat. However, the third time I tried again and the same thing happened, after the pause, my voice came back a second later and finished reciting the remaining letters. Because I paused abruptly, is my salah fine?

Q:

1. I recited ‘saliheen’ with a bottom throat ‘ha’ and noticed during the middle of reciting it during the enlongation of the last syllable. During the elongation of ‘heen’, even after I realised, I still pronounced it with my lower throat. Is this considered intentionally reciting something wrong and did it invalidate my prayer?

2. During the du’a portion of Witr, I usually recite Rabbana Atina Fidunya 3 times. The second time I recited it, it felt like I had recited ‘Rabbana atina fidunya hasanatan wa qina adhabanar’ as opposed to the correct full invocation. Because of my uncertainty, can I assume my prayer is sound?

Q: When performing salaah, can one recite Surahs against the sequence of the Qur'an? For example, can one recite Surah Falaq in the first rakaat and Surah Kaafiroon in the second rakaat? 

Q: Is it makrooh to recite a Surah in the 1st rakaat and then skip a Surah and recite the next Surah in the second rakaat?

Q: Is it makrooh to read a shorter Surah in the first rakaat and a longer Surah in the second rakaat?

Q: If I recite surah asr, kauthar, ikhlaas in witr salah every single day, is it makrooh?

Q: Recently I learned to read the Quran and learned that a lot of the surahs I recite during salah (including Fatiha), I had been misprouncing. It was small mistakes like pronouncing س in places where there should be ص or ث. Was my salah valid even with these mistakes?

Q: 

1. If an Imaam recited an aayah of Surah Naba incorrectly in the fardh of Esha i.e. instead of reciting لاَ يَتَكَلَّمُونَ إلّٰا مَنْ أَذِنَ لَهُ الرَّحْمٰنُ, he recited لاَ يَتَكَلَّمُونَ مَنْ أَذِنَ لَهُ الرَّحْمٰنُ, will the salaah break?

2. If the salaah breaks, then if among the muqtadis there was a person who was a musaafir, should the musaafir muqtadi repeat four rakaats or two rakaats?

3. If the mistake was in Esha salaah and the Esha has to be repeated, then will a person who has performed witr after the esha salaah have to repeat the witr salaah as well? 

Q: I would like to know if I get the Imam in Ruku in Jamat, should I read Surah Fatiha first after takbir then go to Ruku or should I go to Ruku directly?

Q: If Surah Ikhlaas is mistakenly recited in the first Rakaat, what is the best Surah to then recite in the second Rakaat?