yes, you can use wooden window frame and shutters. provided wood should be properly seasoned and both ends are sealed by using liquid wax.

First you need to decide on the look you want to have on your bathroom. If it is classical stained glass suits the better and for modern go for frosted glass. But before going to stained glass make sure that the bathroom furnishing and fittings should be in a classical type. Where as for the frosted the bathroom furnishing and fittings are readily available in the market.

Yes Rakesh, you will have to cover the window to make sure the eyes are not strained due to bright light from behind the TV. Choice amongst curtains or blinds should depend on the room interiors. However curtains would be better here. Thanks Nitin CORNERSTONE DESIGNS Bangalore

The distance between chimney and hob needs to be 26"-30" : 65cm-80cm. placing it above the window, suction power is reduced, placing it in middle of the window, will make the window ineffective. Island chimneys are best suited to be positioned in middle of the room, the duct running through false ceiling. also they fall in the expensive category. it is best that you move the hob position to side of the window, or totally to the other side and do chimney core cutting there.