Starting an unarmed character, Khajiit, name is Phoenix. He specializes in Heavy armor, Block, and since he's a shrewd businessman, speechcraft. I know about Gian the Fist already so...

He has a fetish for shiny things. He refuses to let go of any jewels or jewelry he finds. He plans on filling his house with his treasures.

My question is this, what flaws do you see coming up for me with a build like this?

Unless you dabble in magic as well, you will become hopelessly bored real fast.

I was planning on using resto as well. Why do you think i'll get bored?

Because there is no unarmed skill tree, so there is little you can do other than attack and power attack.

Phoenix isn't really a Khajiiti name but I don't see any flaws with us but It'll be hard in the start since the Khajiit aren't naturally good with heavy armour so you'll be at a disadvantage until then.