Advice Pls... :(

In all honesty, you might wanna level up a bit. Either that or continue to buy mq services. Your gear is okay for now but at lv140 bosses will be much more difficult even as mq bosses. I suggest grinding so you may gain more stat points and possibly new skills. Hw isn't really meant to have very high survivability tbh and usually goes by the saying "Kill or be killed". If you can perhaps pair up with a tank or find a bishop who has the ability to resu spam then i think you're set for mq but you'll still probably need to grind a bit to gain more stats and have higher dmg to kill the boss faster.

prioritize ur survival more than dmg first
 try getting ur gears to their maximum upgrade first (since ur buying mq service ill assume u have good spina source xD) general wand 3 - hulam nemes reup , replace taenia with clematis hp20% (lower matk and higher mpcost but u get more cspd and skill delay)
and when soloing bosses its always a requirement to kite as a low lvl hw ...and always never forgot to paralyze the enemy first after u drained so u wont take too much dmg- with nemes reup and clematis u should be able to cast drain without much cast time and delay

drain- paralyze(thunderbolt) - and ur most damaging spell but for now hold off on spamming earthquake its gonna hurt u more than it hurts ur enemy - so use ur second most powerful and fast skill - FIRE LANCE - hit and run or kiting method - dont just stand there casting like a stone xD cast run cast run cast run cast!! -bringing a few stk of thick revita m would be awesome as well ^^ just use it in between drains heal to keep ur hp up

anyways its also better if u grab a few lvl first or at least same lvl as ur mq boss (up to u though since I myself never really liked grinding at lower lvl xD)

General Wand III [Canes]

Material 1: General Wand II x1

Material 2: Laster Horn x1

Material 3: Little Dragon's Horn x3

Material 4: Deer Hoof Fragments x9

Price: 500,000
i think little dragons horn is a rare or a hard unc thats why noone farms it much
deer hoof fragment is also unc but i think there should be a few on stall from people who farmed fel epaul
laster horn would be the easiest to find in stall 

as for the nemes up 
Hulam Nemes (Strengthened 1) [Armor]

Material 1: Hulam Nemes x1

Material 2: Guard Dragon Jewel x1

Material 3: Black Pelt x15

Material 4: Huge Claw x60

Price: 350,000
guard dragon jewel is around 5-7m dont buy any higher than this or ur jjust getting ripped-off
black pelts is around 50-100k each 
huge claw are just a common drop so no idea on the price range

Hulam Nemes (Strengthened 2) [Armor]

Material 1: Hulam Nemes (Strengthened 1) x1

Material 2: Bird Dragon Leg x1

Material 3: Ultramarine Armor Bit x15

Material 4: Windsail Fur x30

birddragon leg 5-7m or if ur patient just wait till its price dropped cos sometimes people only sells it for 1m
ultramarine armor bit is also 100k each
windsail fur - so far this is the trickiest since its a bit hard to farm and it needs 30 pieces - theyre around 200k each so pretty expensive if buy them all - although it is possible to farm it if u can at least deal 10k plus fire lance cause the mobs only have around 60k hp and moves pretty slow xd exp is good too so u can treat it as an extra reward 

oh crap --now it all clicked haha - maybe spend a week with those mobs xD

haha well aufsea is not an easy boss to solo with all those stuns and hi dmg xD

haha the time i bought one there was alot for 5m --not sure how expensive they are right now though