The third question is that is eating prawn makrooh? I have heard this recently and on searching on net found multiple answers, since I follow the teachings of your thoughts I would consider your inputs as correct for me.
Answer
(Fatwa: 1667/1291/B=1433)
(1) This year you will pay the zakah of eight lakh rupees.
(2) Calculate it after the year completes, then you can give it to poor and needy ones in small amounts any time.
(3) Ulama have different opinions regarding it. Some call it insect and thus regard it haram while some call it fish and regard it halal. As per the evidences, this later opinion is more acceptable hence you can eat it. However it is better to avoid due to difference of opinions.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband