Selling customized products made on order

Q: If a person does not own any products, he cannot sell them according to the hadith. But what will be the ruling for customized products which are made on order? 

For example, furniture, customized packagings, custom business cards, custom printed clothes and many other things which are made only on order. These things cannot be kept in stock, because every product is made as per customer's requirements. Such products are neither with the seller nor with any factory. Because such products can be made only when the customer places the order, as per customer's requirements. 

So my question is whether I can take the order from the customer as per my price and give it to the factory? And can I take the full money from the customer in advance? Please clear my doubt.

Woman working due to living with an abusive mother

Q: I live with my mother who is mentally and physically abusive to me and my siblings. Last year, she broke my nose, she has called me ugly and stupid and worthless my whole life. She pushes me to do things that are detrimental to my mental health - like marrying someone 11 years older or getting into med school. 

I want to leave my household and make a life for myself so that I don’t constantly feel suicidal and can do some good in this world. But in order to leave, I must apply to programs that I do not have the qualifications for - there is a program that requires me to have one year work experience and I only have 6 months. 

Even though I do not want to lie, I was wondering if it might be permissible for me to do so in this situation just to help my chances of getting out my house?

Online trading

Q: Regarding online trading, be it a commodity or currency, it is been said that it's not permissible based on both exchanges being deferred and if 1 exchange is deferred and the other is not then is it permissible? 

Can you explain further what is meant by deferred exchanges?