Wearing the niqaab even though one's family may disagree

Q: I just applied for a part-time job and they require that I remove my pardah (niqaab). I usually do not wear it in my home town due to my home situation as a revert and my family is against it and out of respect for them I do not wear it. However I made the intention to wear it full time even though my family would still disagree. 

My question is: What is the ruling on this and would it be advisable to wear it even though it may cause arguing and tension at home, and should I ever take off my niqaab (in future) for the sake of a job?

Occasionally omitting the sunnah ghair muakkadah before Asr and Esha Salaah

Q: We know it is sunnah to read 4 rakaat salaah before the Asr and Esha Salaah. Will it also be sunnah to purposely leave out these sunnah salaah SOMETIMES, as it is Sunnah Ghair Muakkada. 

Ezample, a person reads the 4 sunnah of Asr on Monday and purposely leaves it out on Tuesday and reads it again on Wednesday. Will this be regarded as a sunnah?

Working for a company that scams people

Q: I am working under a company which scam people but my job is to give them money and send them to the other people who will soon scam them. 

What should I do? I need to spend at least 6 months here to go back to my country or I need to pay them 1700$ to get my passport + I need ticket money too. So I have no idea what to do. Please guide me through this difficult time.

Selling various products via Whatsapp or a website

Q: 

1. I sell products from my business website. My supplier has 200 products. I stock 100 items but list all 200 items on the website stating 'available on order'. The customer purchases and pays for the item and I then order and ship it to the customer. Is this permissible? 

2. I post items on my WhatsApp for sale... Customers know I don't have the product. The supplier has numerous agents like myself who advertise and purchase according to order. Customers place orders and once I receive the item, they pick up and pay. Is this permissible or how can this be structured in a permissible manner?