First off you left out the point about the elements the Sun is made up of. Anything other than hydrogen and helium make the Sun MORE massive. So if your proposing that the Sun is not made up of hydrogen and helium that only makes the Sun heavier not lighter. The Sun would have to be made of “magic” to be lighter than hydrogen and helium.
The force necessary for nuclear fusion of hydrogen into helium is known. A Sun the size of the moon would not be capable of nuclear fusion.
A Sun the size of the moon would not be measure to be about 8 light minutes distance and appear to be the size of the moon. A Sun the size of the moon measured to be about 8 light minutes distant would be a mere speck to the human eye.
Once again one must throw out the theories of Physic regarding Gravity and Nuclear Fusion to believe for even a second in Geocentricity.
http://www.freerepublic.com/focus/f-chat/2070704/posts
Article concerning the composition of the Sun.