The question is, then, what TYPE of javazon are you making. If you making a Poison/Lit Fury Javazon, I'd recommend only what you need for a weapon and some block with your modifiers.
Ok my opinion on this i would NEVER go over 100 for any type of Javazon. I'd put some extra skills in invade/dodge and pump vit... I've always put just enough dex for SS and i've been fine with every char I've made... In .09 i made a zon with like 300 DEx ( bowazon ) and it's just pointless, even for a Jabber I made a Lightning strike/Fury in 1.10 and I have done quite fine with max dex requirement for item I wear...