How to select a coffee powder for preparing Turkish Coffee?
This is something that is likely to depend somewhat on your preference. That said, when I cannot get purpose-made turkish coffee, I usually use a very dark roast for turkish coffee, mixing it with a bit of cardamom (about one tablespoon to every twenty tablespoons of powdered coffee).

From the offerings you have available, I would recommend the Very Strong "Arabica french roast". You may very well find that this is too bitter for your palate. If so, I would recommend sweetening the coffee using sugar, rather than going for a lighter roast, but again, you may find a lighter roast.

If you have one of these roasts in your house already, I would recommend starting out by trying that, then playing around with spicing it with cardamom, and sweetening with sugar before getting a different type of coffee. This will help you determine what way you want to go with your finished brew.