At 6'2" I wouldn't suggest a Walt's kit (WTF - Walt's trooper factory). The chest and ab segment can't easily be lengthened and you'll have issues keeping them together and not having a band of black between. A few taller troopers in my garrison struggle with this. Not to say bad things about Walt's. It's fine armor, just not for the taller troopers.
I'm very happy with my AP armor (Authentic Props in Canada). It works well for a taller TK.
You might look at Moncal's / Far Away Creations. They have an etsy store and are a vetted armor maker. I think it's currently called MonCal'sPropShop. Quality armor and it fits taller troopers as well. They're in Colorado if I remember right.