broadcloth...sure you can use any material for quilts, just it is best to use the same material throughout the quilt. As to the front and the back of the material...I don't have a clue just pick the side you like best and stick with that. Have fun!
That might be poly cotton.
It feels different to 100% cotton. You will have to feel both to be able to compare it. Usually polyester or poly cotton has less stretch then cotton.
It is OK to make a quilt with it even though 100% cotton is recommended.Just make sure that you use only that type of fabric on one quilt and don't mix your fabrics. If there is a slight difference in thickness it will ruin the look of your quilt, because you will not be able to match up the pieced blocks.
If it looks the same front and back, you can use either side.
it is perma press I do know that but any thing else I don't know.