Making a HC Paladin Electro-Javelin build. Help needed!

Hello! I just hit level 60, doing monoliths for the first time, still HC. I am very new, to this game, first character to this point. I wanted to ask for help on theorycrafting, as I’ve been glancing through tips and builds, I really have no idea what stats are at what priority level. Additionally, I’m not sure how to balance Mega Damage and Survivability in my stats and skill point distribution. What I’m mostly looking for is a methodology for how to determine what’s best, over just copying what other people do because it’s popular.

My build linked below is still far from being my ideal final setup (In terms of skills) I leveled mostly with Volatile Reversal instead of Healing Hands, so I’m not terribly set on either. Also, from what i’ve seen it looks like most people just stack endurance for Sentinel. I much prefer the idea of Ward, just because it seems safer to me (Especially with Symbols+Aura!), but I can be convinced either way!

In short, I don’t know how to weight the value of Attunement vs Strength vs Vitality or if I should forego damage from stats and focus more on affixes like elemental damage? Or Damage over time? Any and all advice is welcome as i’m eager to learn the basics and try to formulate some kind of path that isn’t just copying popular builds 1:1

https://www.lastepochtools.com/planner/AKE394nB