The Avon Cobra in a 200/60R/16 will fit the Valkyrie. Some bikes require the nutcage mod. in "shoptalk" and some bikes do not. It depends on if your fender is centered from the factory. Three Valkyrie riding buddies and myself all ran 200's, (Battle-Axe) Two of us had to do the mod. and two of us didn't.
Don't be scared, look it up in "shop-talk" it's easy stuff. If your gonna put the tire on, I'd just do the mod. and be done with it, why mess around and come back to it?
Those tires look great from the rear (nice and fat) and handle great too

You'll love it.
Then when you eventually try the "DARKSIDE" You'll be ready.