For me, porter isn't close to being first choice yet and we have no idea what vellacott will be like after his injury.
Wusty is showing well and if he can consistently perform at such a level and continue to improve as well, then we'll have a quality 9 on our hands before long.
However, best case scenario we're progeny looking at another season or 2 before it starts to become a problem for getting them all game time