There is a lot to go over here.
Inquisitor and Paladin go well with each other, and Druid improves almost every build it is added to. With Druid’s Chortasmata paired with Paladin’s generally high base CON and Stone Skin, the build is a good mix of offense and defense.
Cleric : I would not recommend only having 3 points invested in Smite. It’s definitely worth maxing on a build like this. You don’t really need Cure, so consider dropping that for a better Smite. Fade is good for getting some free setup time immediately after a boss spawns, and it can also buy you some time in situations where you or another party member are at low health.
Druid : Carnivory, Shape Shifting, and Transform are not particularly good. I think it’s better to max out every skill besides these 3 and Seed Bomb, then either dump the remaining points into Seed Bomb or split them between Seed Bomb and Shape Shifting/Transform. Chortasmata in particular is probably the best Druid skill overall, so it’s definitely worth maxing out. You’ll also want to enable the Druid attribute that converts its high INT and SPR scaling into high STR and DEX.
Paladin : Restoration is not a bad skill, but since you have a better heal over time in Chortasmata, you might not want it. Stone Skin is not very good compared to something like the basic Swordsman skill Bear or the Monk skill Iron Skin (for physical attacks), but it still makes you take less damage. Conviction boosts the damage of Smite, Demolition, God Smash, and to a lesser extent, Thorns and Chortasmata. It also deals decent damage itself, so it is worth maxing. Sanctuary requires the use of a shield and the ability to deal considerable damage over time to get the most out of it, so if you plan on taking Demolition, which requires a Two Handed Mace, it is not worth taking at all. Speaking of Demolition, its damage is fantastic. Definitely a skill to max.
Inquisitor : For a skill with a relatively low cooldown, God Smash lives up to its name in the damage department. It is a skill any Inquisitor should max out. Iron Maiden and Malleus are not very good in PvE, so I wouldn’t recommend using them. Whether you decide to max out Pears of Anguish or Breaking Wheel is up to you, but the other should be kept at 1 point.
On the whole, it’s not a good idea to evenly spread your skill points across all or most available skills in a given class. Some skills perform well enough at 1 point, while others need to be maxed to get the most out of them.
As for stats, I think the focus should be STR, then DEX, then CON, then SPR. STR is where your overall damage will come from, and DEX is useful for speeding up the animations of certain skills, like God Smash and Conviction, and increasing the damage of your physical crits. CON is just a generally good stat to have, though Paladin has a decent amount of it by default. SPR could arguably be more important than CON, but neither really does much for your overall damage. SPR is nice to have, though, because it boosts your healing ability.
As for gear recommendations, it’s mostly up to you. You might want to consider getting one of these at some point : https://tos.neet.tv/items/210411