Dex bonus on the armor isn't really needed, as you can get to 150 pretty easily with potions, even assume you get clumsy cast on you. I agree that you'd be better off with 10 Stam pieces.
If you put those items on a warrior - where do your HP come from?
Looks like you'd end up with a character with only 170 stamina, 13x hp ... but 100 something mana. Certainly sub-optimal for a sampire - perhaps workable for an archer.
In general, warriors need properties from 3 groups, so reforging with a "big" runic with 2 titles is not going to give you the best mix of properties, IMO. If I was making a mage suit - I'd probably use barbed kits. When I've made my warrior suits, I use spined, and optimize just the 1 property, then imbue the rest on.