Default Cook rom based on stock

Hi to all
I have a very cheap tablet XZPAD703GL and I'm unable to find any custom rom.
Can I download the stock one ( http://www.hamletcom.com/products/xz...spx?t=download ) and cook a custom rom based on that?

I don't need many customizations, just remove some software and force a custom app (made by me) to be the only executable software in the whole tablet.

Is this possible ?