oke I will try to brake this down a bit, I don't know what your gold situation is like but this is what I would recommend. also it would help if you would post your build here.
Vio Axe +5 [hkhkhkhkhk]
Try to get a draconian axe +5 yu > Master black dragon axe +5 yu > black dragon axe +5 yu ( if you find any +5 within your budget with some hax stats on it for instance N4/5 then get that.)
if you are really strapped for cash a clean BM axe would be better than your current weapon any + on it would be a bonus.
Dragon Mable Mask +5 [l31J5J1J5] this doesn't seem half bad allot of pure stats which is never a bad thing.
Thunder lord mask +5 Ju > Dragon marble mask +5 ju again if you find either a TL or a DMM +5 with some haxed stat within your budget (either K4/5 or I4/5) i'd go with that
Black Dragon Quake Helm +5 [DaDaDaDaDa]
Black Dragon Quake Armor +5 [huhuhuhuhu]
Black Dragon Quake Boots +5 [huhuhuhuhu]
if you could get these with the ju (white pearl) that be pretty good, also trying to get a 5D Armour with 30%+ Skill defense would help. but as I take it that set gives you a set bonus it wouldn't be my main concern for now.
Legendary Phantom Mask (M) +5 [cococococo]
pretty good, only possible improvement would be to get it +5 AT but again this wouldn't be of great concern.
Great Kahn's Helm +4 [cocococo]
Great Kahn's Armor +5 [cococococo]
Golden Sky Dragon Boots +5 [cococococo]
This would be your main concern, try to get an elite set again I don't know what you money situation is like, but if you get these replaced with elite HT then you will have improved a lot.
as for the rest Do you have 2cnd accessories, and normal accessories ?
as for where to level. here is an overview of what stats you need to get hit 2/3's.
Silent Valley - 750 def 1400 sdef (conf def of 12+ required)
Crimson Sky - 800-850def 1800sdef (poison def of ... req. conf def of 8+)
Crystal Summit - 900-950def 2000sdef (unknown posion/para. 14+ conf req)
Deserted Temple - 1100-1200def 2100-2300sdef ( no posion/para/conf req)
Red Dragon Lair - 1300+def 2500-2700sdef (unknown posion/para. 45+conf req)
Tiger Castle - 1500-2000def 5000+ Sdef (unknown posion/para/conf)
(number may be off a bit its a long time since I checked these)
Just level in the highest map possible without getting to much damage
I hope this helped.