I wish to elucidate couple of things as I see. Any economy can not function without its proper tools. Means of transaction is one of them. Money is the most common one in any form, cash / credit / bit coins etc. if there is economic activities there must be a unit wise tool to measure it. Barter used by more primitive economies in the past.
If, economics is a reality as a social science, human nature is another fact we must take in to account. We simply can not change forces dictating us humans. Pyramid of needs as you mention summons up the very foundations of it ( at least for time being ). Desire to have more or wealth is the major force driven the development of human nature, of course have to ignore the effects of greed in sharing profits.
Although, we dream to be a space nation, Earth will be the environment where we will flourish our nation therefore we have to abide by the economic and fiscal policies of the rest of the earthlings as well.
Our main constraint is, we don't and not intent to own land on Earth where we can establish means to generate funds to finance our nation. As refered as land based economies where we can have raw materials, factories, etc. The only resource we will have is workforce. Not only scientist or technology developer engineers but people from every walk of like. Doctors, teachers, nurses, economists, admin. people, accountants, lawyers, marketers, etc.
As of 100 th day of our announcement as a nation certain fiscal remedies as I understand has undertaken by the founders, we can accept donations through NGO Asgardia, and issue shares under the Asgardia financial institutions but these are all tools such as a father making all the money for the well being of the family and rest of the members looking for him. Unfortunately, even in the most just democracy, your freedom is very much limited to your economic freedom. Unless you have your own means of income, you are dictated by who pays for the bills.
We have to establish our economy in line with current trends, again at least during the span of our lifetime. Service Based Economies is a tool used by many nations at the moment where the land based resources are limited, you only need skilled, educated people and communication capabilities. There are even more potential out there to explore. In our vision Asgardians can contribute the finance of the government as well as maintaining their own life style. The market will be the whole world and can be easily integrated with the existent taxation, etc systems of the each Asgardians domicile country.