Hi, I'm trying to do a run where I start with Thrór and eventually reconquer Erebor. I was planning on taking Moria first, but that seems to already be part of his custom content. I am currently an adventurer, after Smaug drove me out of Erebor and my camp is in the Dunlands, right outside of Moria. I wouldn’t have a problem with restarting btw.
I am also just realizing that this one is going to be pretty long so sorry about that and thank you in advance for reading/helping!
Earlier the Game asked me if I wanted to travel here (Moria) or to one of two other locations. In the option for Khazâd-dum (Moria) it said that this is the only way to continue with Thrór's custom content.

My first question is now, what is the additional custom content?
Because right now there are no decisions or anything like that, that seem Thrór specific. Am I supposed to invade Moria? Because Azog is Strong AF. Is it simply the option to decide to reclaim Erebor?

My next question is, how should I go about reclaiming Erebor?
In the corresponding decision it names a few things that can increase my chance of success, so I'll list them and my questions here:

1. Member of Aivadiurion Dynasty in Laketown/Esgaroth (with high prowess).
I don't think this one is too hard. I imagine I can just conquer Esgaroth and recruit any Aivadiurion at some point and then make the Aivadiurion the Lord of Laketown. Since this whole thing will probably take a long time the Aivadiurion might have a child, that I can somehow get to have high Prowess. If you have any tips about this, they would still be greatly appreciated :)

2. Lord of Esgaroth having Dragonslaying Artifact.
Now this one seems more complicated, as I weren't able to find either Black Arrow or Windlance. I am also not sure how I would go about acquiring these artifacts if I knew their whereabouts. I know that with the leftmost diplomacy lifestyle path you can buy claims on artifacts. If you know any other/better way of doing this, that would be appreciated. This will also become an important issue with some of the other points.

3. Having a First Age Elven Sword.
Now I think this one might be a bit easier than the Black Arrow/Windlance as there are many Elves with fancy swords around. The bigger problem here is again that I'm not sure how to steal/acquire these swords and I'm also not sure which ones are from the First Age.

4. Having a First Age Dwarven Helmet.
Similar issues as with the other artifacts. I found two possible candidates, Durin’s Helm and Helm of Nordinbad. I know that you can get Durin’s Helm as Balin in Moria, so maybe it’s possible with Thrór (or some other Dwarf) too. Helm of Nordinbad is owned by “Petty King Alatheus Ragnarisson” of the Framling Mark (also Framling Dynasty). He’s located pretty far north, a bit to the west of Thranduil, on the other side of Mirkwood. I’m also not sure if that one is old enough, but it is the only other Dwarven Helmet I could find.

5. Having a Hobbit help whose Intrigue is 15 or above.
I think this one is pretty feasible, although I’m not sure how exactly one would go about this. Should I go to the Shire as an Adventurer? Should I try to find one with high enough Intrigue or do you think it’s easier to just go with any Hobbit and somehow get their Intrigue up after the fact?

Some more thoughts about the chance-increasing points:
Maybe it’s possible to get at least some of the artifacts before Smaug drives you out of Erebor. Maybe you can craft some of the artifacts? The Helmet and Sword are probably not possible as they must be of the First Age but maybe the Dragonslayer ones.

Lastly, some more random questions about this whole thing:
Are there reasons to stay an adventurer? I was thinking that there might be some unique events or mechanics (I got the DLCs that add the whole wandering Mechanics because it told me they, -at least Roads to Power-, were necessary for Thrórs custom content, so I don’t know a whole lot about them).
In connection with this, are there any drawbacks to moving your camp? Because of the decision that tells you, going to Dunland and then to Khazâd-dum is the only way to get Thrórs custom content, I’m afraid of moving my camp.
More of a funny thought: can you get some Elven Swords, by triggering an event, with the Trolls from the Hobbit? I think that would be pretty cool XD

I’ll try and do updates if I find anything by myself. I’ll also be happy to give more information or clarify anything if necessary, so don’t be afraid to ask for that!
And finally, thank you for reading my ramblings! Hope some of you guys can Help!

First Update: was able to buy Helm of Nordinbad, no Idea if it works, also possible to buy Thranduils blades, anybody know if they're from the First Age?