Nikaah & Marriage Issues

Q: A friend of mines had a question about marrying a person who is a shia and willing to follow and raise the children as Sunni:

My question is that I want to marry this girl but she is Shia, if the girl is willing to marry me, raise our family and follow the Sunni way as my parents want is it gunaah or forbidden to marry a Shia if they do not convert? Her parents would accept me as a Sunni they just would not want her to convert but she will follow the Sunni way and also raise our chidlren sunni. Please keep in mind we have not talked to our parents about this situation yet and please give me some guidance as I do not want to go against anyone's parents. The only thing we have done so far is complete the isthikara which came out good alhumdulillah.

I did Istikhara for 7 days:

Istikhara: first night dream: He saw in his dream he was taking a picture of the girl and his family together like a group photo.

On the fifth night he did istikhara he had a dream where he saw lots of trees and her in a white shalwr kameez coming to his house accompanied by her little brother.

1. Is it gunna or forbidden to marry a Shia if they do not convert?

2. Is their a conversion process from Shia to Sunni? What does a Shia person have to do to become Sunni?

Q: Can someone masturbate over the phone with his wife if he is away from home especially on hajj days when not in ihraam?

Q: If a women has breast fed two children they both cannot marry each other but one child has got breast feeding from the women directly and due to excessive milk of the woman, she has taken that milk in vessel and has fed the other child but he has not sucked her breast for feeding. Is the nikah still not allowed between both the children?

Q: My question is if a non Muslim girl accepts Islam then will marrying her be accepted in Islam?

Q: I have married just 6 years ago. It was a love marriage. I didn't have a condition at that time to pay for mahr. But then I have paid some money to her. Please tell me is our nikaah valid?

Q: There is a girl whom my cousin was previously in love with. The whole family knew and since he was still studying, the family wanted to marry them once my cousin's studies were over. After a year, for some family reasons, my cousin left the girl. I know that girl and I want to  marry her and she too wants the same. When my parents and the girl's parent came to know about this, they are telling us that this is not possible, my cousin won't like it, what other people will say, what elders will say etc. In my point of view, its more society and culture thinking. I wanted to know what Islam says about this? What is the view?

Q: Is it fardh to bury the placenta (afterbirth)? Or can one just dispose of it in any other way?

Q: I am 28 year old. I have been fairly successful in my career and I have never been married. I am very well groomed and have chosen to remain pure out of the fear for Allah Ta'ala. I will prefer to marry a muslim women with similar traits in compliant with Shariah. I am well versed in the Qur'an. Should I find a women around here and just marry her or will it be permissible for me to ask a Mufti to refer good muslim women for me to choose from, as I want to do it according Shariah strictly.