Renewal Endgame items can either be obtained from quests or cash shops. And what matters the most on items are its upgrade(+10 or higher some even have better effects/stats when upgraded to +14 or above) and its enchantments(some can be re-rolled, there are others which you can't). Also some non mvp cards become way better compared to mvp cards(example for this is turtle general card, which gets rekt by cards that increases skill damage).
Oh about skills, even in 3rd jobs, skills can 1-shot almost everything. So competitive pvp is pretty much non-existent as they 1-shot everything. even AB(arcbishop) can 1-shot 2m hp mobs with an aoe skill that has 0 cooldown. Regarding enchantments from items(both equipments and shadow equipments), you can get combinations of effects like 90% ACD reduction and 100% VCT/FCT reduction(there are items that reduced FCT by mili/ seconds). So Forget about the 530(2xdex + int) total stat points formula, as you can still achieve NO-Cast in most cases.
And the 4th jobs? Haha... Forget about your 2,000,000 damage ability. Here comes my 50,000,000 damage ability.
So don't expect any competitive PVP play on Renewal, It's like your playing a single player fantasy adventure games because yeah I F*CK ALL with my gajillion damage ability. Even players can't reach 1m HP.
So Yeah, this is only plausible if the items from the official servers are available, even if the server says its episode 17.x, or even with 200/70 max levels.
My tips:
Just follow the quest line 'Banquet for heroes'(16.1) upto Illusion Quests(17.1). You don't need to spend anything except your time on doing this. Get Illusion Equipments(17.1) if its the current end-game. If not go further to Einbroch Dungeon 3 or Fall of Glast Heim quest line.