I disliked it. You're going that far into the offensive tree when Ryze really doesn't need it; and ignoring the Utility tree, which is his best friend (Movement speed, CDR, Mana Regen).
Frozen Fist is good for Tanks. Ryze is tanky (which you aren't even building him as), but this isn't his job. This is the job for Maokai/Skarner/Malphite. You already have a spamable root you don't need the slow. Wit's End is also a terrible idea, you shouldn't be auto attacking this much.
This build looks in every way inferior to standard Ryze. You already lock down a single target and rip them apart with his standard build. This build would do that worse, since you don't have full CDR and thus won't be getting your spells out as often.

Well, if you thumbs, leave me a comment and tell me why. Otherwise I have no idea what you want.