First and foremost I’ll give you my opinion on your first 5 Ranks.
Okay, I was going to comment but “to me” here is just to much wrong to type out so…
Maybe someone else can help with the Sacrament because honestly in any non-Chap build I’d leave it at one as it scales horridly and you just want it for the extra line. However I am not sure how it scales with Last Rites.
You say you want solo, but everything you had; set you up for death solo and worthlessness in PT play.
1: I’ve heard varying opinions on how Chap does after 280. Although most of your damage would come from Inquisitor anyways. Auto-Attacking mobs with 500k HP and that can hit for 8-20k damage depending on gear ect isn’t something fun you want to do.
Blessing I left at 3 for Attribute, but for me; Unless i’m going SPR I tend to just use vendor buffs anyways.
2: Generally for Melee Clerics DEX/CON (imo)
3: Your general Mace/Sword whatever fits you best.
(This is just based on your first 5 ranks.) But as @mrshadowccg Maces would be best for Inq due to God Smash.
The build can work, but I think theres better options out there.
I have a Cleric, Priest C3, Chap, Monk C2, Inquisitor Build I’ve been working on for giggles.