All made screen or ....

[Rebel6666]

HI all, I would like to say thanks to all the members in advance for trying to help me.

Within a month I will be finishing my basement home, I'm making a room espacially for my HT. Here is more information:

Dimensions 14.2 * 14.2 square room is a 10 feet high.

I'm going to buy when my room is done a Panny 4000 projector
I have a AV Pionneer 9130 THXK that will be pushing my Energy C-series set.

Front: 2 C-500
Center: 1 C-100
Sub: S10.3
Surround : 4 C-100.


So my questions to you are:

1- How big should my screen be: 96, 106,120

2- Should I buy an already made one like Grand View I can have a 106' for 500$ or should I make one myslef with "GOO Paint" that will cost me arounf 300$ which one should give me a better image?