Just for context, these are my stats.

I'm just trying to start planning ahead on what I should be working towards as I approach the Zulrah/late Slayer grind. As far as what I'm currently working on/unlocked:

• I'm currently in GWD farming for Dragon Boots
• I successfully pie boosted and got my Abyssal Whip
• I got my Berserker Ring (i)
• Quest Cape is done
• I have Lizardmen Shaman unlocked and do them on task
• I have Black Demons unblocked (until I get my first Zenyte for RoS, then reblocking until I get Blowpipe)
• I have Ahrims and Karils top from Barrows, still need the bottoms for both. Waiting to finish with Trident
• I'm going to work on hunter at red chins to prep for Kree later

I'm not entirely sure what I should be getting ready to focus on, though. I don't want to jump into Zulrah until I hit 87 Slayer and get my Trident. Once I get my Trident, I'll go back to Barrows and get that finished up. Hopefully by then I'll have my Zenyte and Ring of Suffering and be ready to start learning Zulrah.

What else should I start planning ahead for, though? Until now my goal has been to push to 87 Slayer, get a RoS, and start learning/farming Zulrah. But I'm not quite sure what to work on after the Zulrah farm, or even what to focus on during the days I don't farm Zulrah. Any advice here on a general progression path? I see talk of the GWD bosses, CoX, a bunch of other bosses and stuff. But I have no idea when I should worry about that stuff or what I should have to be ready for it.