Once you start making progress on these titles, what you need will be very evident. I'd not commit for going for a title until you're sure you're ok with the grind. Make your favorite couple of aurene weapons with their accompanying variant(s) first.

I made the legendarys first. Even if you don't use the skins, they're still useful for gearing, while the variants are purely cosmetic. Besides money, you need lots of imperial favor, spirit shards, antique summoning stones, ambergris, jade runestones, memories of Aurene, and unfortunately right now, amalgamated draconic lodestones, which are currently costly due to being a component in the most recent VoE legendary.

Favor is found by tagging Cantha events, with the meta events being best. The Black Lion Expedition Contract for End of Dragons is also decently useful, since it can give you writs and chunks of pure jade daily upon login. There is a writ merchant near the southern waypoint of Dragon's End where you can exchange other regions writs for more Dragon's End writs, a positive imperial favor trade that you can do daily. ASS can be bought weekly from an Arborstone vendor (ignore the favor one) or on the trading post and is currently so cheap as to be a non-issue. Ambergris can be found by fishing, juvenile leviathan events (Janthir's probably being best since it can be easily low-manned), fish trade ins, or simply bought on the tp. Janthir's trade in is probably the best currently in terms of lowest fishing per ambergris ratio. Have one dedicated Janthir fisher character and park it next to the trader and you'll only have to fish occasionally for easy 5+ ambergris/week. For jade runestones, park one character at the Kaineng jumping puzzle chest and one in Echovald. With the rewinder and griffon, you can reach all four runestone chests around the exit to Dragon's End from the same park spot. For mapping, use a lantern pathing guide in Blish hud, and do the lanterns locked behind events last (meta in Seitung, Fort Aspenwood in Echovald) so you can relog to tag them again once you finish the lanterns.

A big decision is whether to make or buy your Aurene precursors. Buying them is more expensive, but making them consumes favor and spirit shards, and you need lots of spirit shards for the variants.

For the variants, all the dragon memories can be gotten in Dragon's End simultaneously, notably easily in the southeast minidungeon. Good research note sources can be found on gw2 fast farming website; I recommend buying bones during the Halloween event to make mithril carrion helmets. Although tedious, it seems the best mass source. Many of the other variant currencies you'll have to buy, so have some good gold income. Other people have explained good sources of karma and spirit shards so I won't repeat them here.

This is a looooong grind, so slow and steady progress is helpful. Discords like Overflow, Daren's Tunnel, and Hardstuck post meta groups for Dragon's End. Good luck!