You can start your deity quest at about 45 for a 'quick' boost in a bunch of stats.
Off hand I'd also suggest saving up for some deep metal or a Rotblade, leaning more towards the armor since you are a tank. But both should serve you well. Check out the gear on the below fomelo (My brothers SK). Alot of droppable/buyable gear on him, mainly tradeskilled. Whats not is probably Tmapped, which you'll get too soon.
Seems like you are well on your way. Looks like you're replacing Wyvernfang armor with Warpmetal. Good choice. Starfall BP. Good bracer. Rotblade seems to be the defacto standard of SK onehanders, so I'd start looking for one of those. BP of the Warlord would be nice too. You're headed in the right direction, though. Just don't forget to aug your gear. Makes such a nice difference.
Something to note is you should try to keep a backup BP in your bags for when you are tanking a group that has a mezzer. The dot proc on the BP breaks mez constantly.