Honestly Wit's really isn't that great anymore. It used to siphon mana, but no more.
Wriggle's would probably be better spent toward's a full Bloodrazor (razors costs a full 1k which isn't cheap). Besides, with SV, Turtle should be all you need to keep your health up.
Ghostblade is interesting as it could sub for a Tiger proc (Udyr has an easy time hitting the AS hardcap), but the CDR is redundant w/ SV, and if you want armor pen, Cleaver would be a better bet.
The crit chance from Ghostblade is also wasted on Udyr, unless you want to go a standard AD carry build (IE, Trinity, etc.). But Udyr can't crit in Turtle so that causes a problem there.
I'd work on it, but it's not a total loss. What's your reasoning?