Witr and Nawaafil

Q: I have many qaza namaz remaining. I want to offer a nafil namaz on Friday for 7 weeks for sharh e sadr. Can I do this or first I have to offer qaza salats?

Q: It is mentioned in the Hadith that Voluntary Worship is a means of attaining proximity to Allah. Besides the Obligatory and Essential Prayers, the Holy Prophet (Sallallahu Alayhi Wasallam) used to make arrangements for the Voluntary (Nawafil) Prayers too.

1) I want to perform tahajjud namaz daily but when I sleep I don't wake up at the time of tahajjud. So can I just offer eight rakats Voluntary Worship for Allah before going to sleep daily?

2) Is it allowed to perform extra Voluntary Worship any time of a day and any time of night before going to sleep?

Q: How must be istikhara performed? Should the dua be read after two salams? Can the dua be read in my language, I can make mistakes in Arabic and also the text we add about the particular issue in the dua I know only in my language? Is it true that istikhara for one thing can be made up to 7 times or not more than 7 times?

Q: Can we offer zuhr's four raakat sunnat-e-muakkadah after zuhr faraz namaz?

Q: My question is about witr Salaah:

1. After performing Esha Sallah at 8.00pm, can I delay my Witr Salaah till 11.00 pm(my sleep time)?

2. Can I combine Tahajjad and witr at the above mentioned time?

3. What will be my last Salaah before I go to sleep, Tahajjad or witr?

Q: What to read in Tahajjud namaaz?

Q: What is the correct way of performing witr Salaah?

Q:

1. If a person comes early for Asr and Esha salaah, but needs to learn dohr. Can he read two rakaats as the Sunnat Salaah?

2. When reading this two rakaats Sunnah, can he make intention of other Nawaafil e.g. tahiyyatul masjid, wudhu etc?

Q: Do Muftis pray Istikharah prayer for fatwas that might lead to schism in Islam or cause hatred to other Muslim sects? Because we are ordered to stay united.

Q: I want to ask that if I fall asleep at night without offering Isha prayer (unintentionally) and then in the middle of night if I wake up, can I offer isha prayer and soon after that tahajjud prayer? Also, do I read tahajjud prayer before witr or after witr (completing isha prayer and then read tahajjud)?