And to go off that he'll probably go for a low right after the wolf cannon. However, the cannon takes a second, so if you see it coming, getting a CH Rising Fang is worth the effort, and its something to keep in mind if they really like IAD jump ins. This, of course, can be baited and punished terribly, so you're better off with something a bit safer or just punishing after blocking jc. Grabs beat that most of the time or even just A's. Just don't let that bitch in. He plans on ripping up that nice suit of yours...
Also its worth mentioning that j8D might not be very reliable against Valk. His air hitbox is weird thanks to that lanky man's figure. So be mindful of that and don't let yourself wiff it and make an opening for him.
When dealing with his AAs, I find you really don't have that much to worry about. I'm not saying don't worry about it, but its not quite as dangerous as they're made out to be, I don't think. 6A's range is terrible, so try and start up j2C or 5B a bit early so you can beat him to the punch. These ARE somewhat risky, because he could have the timing down and sometimes, SOMETIMES, 2C will be able to actually beat j5B, despite losing its glorious AA ability. But in this match-up its worth taking some risks. As soon as you put him on the defensive, the whole tide of the battle could change very drastically. All he's got once under pressure is counter-assault, bursting, and his distortion reversal. So if he has heat and is under pressure, don't abuse 214D~A. Its not that great of an overhead, anyway. The wolf AA really should only be a concern if you're jumping in without chains, and he's already in wolf form. The transformation time needed to use his 5B is just too much for him to beat most things.
As for yourself, as Dusty said, don't stand still. Standing still just gives him a myriad of ways for him to close in and bite your hat off. Seriously, he wants that hat, man, don't let him take the hat. So to do that, keep flying around, trading sides of the screen to keep you away from that maw, and maybe he'll waste enough meter so that he'll be stuck with IAD jump-ins, and those are pretty damn punishable.
Ok...to be honest, I'm not entirely familiar with the match-up on the Hazama side. I main both character so I've been on both sides, Valk side more though. So this is going off what has worked for me because of the mistakes Hazama players have made. So feel free to cut this down, and shit, heh. Hope it helps though! This match-up really is a bitch, for both sides.