One date as mahr

Q: Is it permissible to me to ask for 1 date for my mahr? I would like to ask my fiancee to go to the poorest date seller, ask him how
much 1 kg of dates cost (f.e. 10 Dinar) and ask him how many family member he has (f.e. with him included there are 6 people living with him) so my fiancee should multiply the cost of 1kg of dates with the family members (inc. the date seller). f.e. 60 Dinars. So I want my fiancee to pay the date seller 60 Dinars, but take only 1 Date as my mahr and leave the others to the date seller as a sadaqa. I would like to eat the date with my fiancee's mother and my mother, and plant it to a tree (in shaa allah). I also would ask (as part of my mahr) for the surah mulk to get recited by him from his heart.

Is this permissible that he give me this 1 date + reciting one surah under such extraordinary circumstances? Or is the mahr void if I just ask for that?

Investing in shares

Q: I have just graduated from metric and I intend investing my money in shares. Please inform me as to which investment companies (oasis, old mutual, al-baraka etc) I can purchase unit trusts from, which are halaal and suitable?

Wasaawis

Q: I was in my bed suddenly a thought came to me that have you said to someone you are not married? I don't think I  said so. I know these are waswasas but they don't leave me. Can I take bait?

Nicknames

Q:

  1. There are names of Allah when we keep we are not required to add Abd before them. Eg, Haleem. Which names of Allah should we be adding Abd to?
  2. Can we call people by nicknames? For eg, someone's called Hanzalah. Can we call them hanzu hanzli etc? What's the ruling regarding it.