I may drop that and just move on to Legion once I hit the right level.
Even though you can start Legion content at 98, I'd recommend at least being 100 and farming some gear tokens from the north-west region of Tanaan, the Ruins of Kra'Nak, as well as farming up specific Tanaan treasures before going into Legion content. Legion's scaling is kind of wonky and ilvl matters. The quest leading up to the Broken Shore and the Broken Shore scenario itself are tuned for 650(Tanaan)-700(Invasion event/WoD raid) ilvl gear. At 98 you'll be in the high 400's, low 500's and, depending on your class and spec, you could be in for a rough ride.
At 100 Varian Wrynn should appear in your garrison starting a quest that will send you to the Iron Docks, you'll free an NPC there and that will allow you to build a shipyard for your garrison. After some minor quests, a few minutes, you'll get the quest chain to begin the Tanaan invasion. After a few minor quests you'll get access to the Alliance hub and from there you ignore everything and go farm some gear tokens and treasures.
Use the weapon and armor/trinket tab to come up with a hit list of gear you want to get in Tanaan from treasures...
http://www.wowhead.com/guides/tanaan-jungle/treasures-by-type-and-stats
Gear tokens can be farmed from purple crystals that spawn around the Temple of Kra'Nak, although it may be hard to compete for them without flying. These can net you 650 gear for your class/spec. Even just a few pieces will help.
You don't have to do any of this but you will have a better time entering into Legion content if you do. I rushed through on a toon from WoD to Legion at 98 with crap gear and it
sucked in the beginning.
I was going to pick that but I ended up going with Proudmore, not down for having to wait to play the game. Proudmore has the second highest population so it's close enough.
Proudmoore-NA is the unofficial home of the LGBTQ community and that added dimension makes for some truly unique toxicity that I haven't experienced on other servers. On top of the generally shittiness towards others and low-effort political trolling you encounter in the public chat channels on every other PVE/PVP server, you get extra special trolling targeting gender and sexual identity politics. It honestly just hurts my brain thinking that some of the people typing the foul things they do are functioning adults.
People complain that server communities and identities are dead but there's a rogue's gallery on Proudmoore I have to perma-mute any time I roll an alt on that server. It's to the point where easier just to leave public chat channels instead of bothering to try and filter them to make them tolerable.
Server population size is nice though, healthy AH and market, lots of active guilds, server is in the top 15 (last I checked).