Like MsZee says don't hang them in a row! It'll chop the wall and it won't look good. Actually offsetting them any way will look good and you don't have to put three on each wall if only one wall has them all it'll still look good. Although I would personally depending on how many prints you have, make a feature wall and then have one or two on the other walls.
Personally I wouldn't put them in clip frames if you can avoid it.
Let's just say I've had an experience with them falling apart before me, I promise I didn't touch it
