Here’s a list of budget gear you can aim to hunt/buy for now:
Top: Superior Royal Guard Armor - lots of recipes sold at AH/market
Bottom: Superior Royal Guard Pants - lots of recipes sold at AH/market
Gloves: Demonas or Ohgmar Gauntlets - click here to know what monsters drop them
Boots: Superior Greytis Greaves - click here to know what monsters drop them
Bracelets: 2 x Glass Bracelets - can hunt from Lemurs (lv.193 monster) at Downtown or buy from AH/market
Necklace: Superior Guardian Necklace - lots of recipes sold at AH/market
This will give you a good mix of physical and magic defense which should increase your tanking power in high level maps since your build doesn’t really kill mobs quick.
Also, always get Aspersion buff from Pardoner shops.
As you progress, of course you’ll want better gear so for top and bottom you may want the Grynas or Virtov plate set. Both gauntlets and greaves will still be good to 280. As for bracelets, Glad band or sissel. Necklace can be Max Peta.
These are just suggestions though based on my own experience though it may differ a bit with you since I’m Sword C3 (I have longer P. Barrier and stun/slow debuff from Restrain).