General

I need some advice, please.

Greetings,
Before I begin, please note that this is going to require some reading, I want some real advice and for that to happen people should learn of my circumstance and situation in order to do so. So, Warning: Wall of Text (It's not really that bad), but you know what they say, reading is good for you

Hello, so after being on and off, on Maplestory, I've come back again. I've been playing this game since like 2007, and never ever really managed to make good/decent characters in terms of damage. I'm not really too big on damage, but I have learned that it is important in this game.
You see, I live for bossing, and without even a decent damage, bossing is nothing but a fantasy. Its specially boring when I train and train and my friends/guild-mates are out doing intense bossing and I can't join them because, well, I suck, and I go back to grind, making me burn out of this game for a while and I come back around after I cool off a bit and the cycle repeats again. See my problem?

Currently I only have one main character; it is a level 151 Aran. It is not necessarily a bossing class but the only reason I made it past level 100 was cause of the Aran's awesome mobbing capabilities. I'm using my friend's character as an avatar for basil because, he kind of quit and gave me his account, he has godly characters but even though they are in my possession now, they are not authentic and not originally mine, and it just doesn't feel right.
If Aran is not a class that will get me to my goal please tell me which class will. I'm willing to start all over again (It's not the first time ).
I had a crusader back in the day, only managed to make it to level 102 before I quit. He had good damage but god, it was a treachery to train it, super slow at ever thing </3.
I do like Bowmasters and Drks, as far as gameplay goes but Idk how good they are at bossing and training in comparison to my Aran.
So, on point, I have a few billion mesos to use up to do whatever I need to do, to make a good/decent character and have "fun" in this game.
Anyways, here are my current equips on my Aran:
18 atk BWG (This is not so bad)
128 atk Hellslayer, 15%PDR, 0 slots (Average)
Clean Zhelm
clean level 90 Warrior shoes.
3% str earring
Linin ring, Crusader zeal ring.
Clean level 100 or (110?) Warrior Overall.
2 atk 6 str PAC
Spinglemann necklace, that monster book or whatever it is gives like +3 all stats and 15% PDR.
25 base dex (I made this Aran when Aran's first got released)
As you can see my equips are normal or below
My attack range raw is like 7XXX~93XX, I see people below level 120 have that range, it's very, very sad. I do around 35k~60k per hit on OS, and Fb usually manages to hit past 140k constant.
Making a Cyk to 120 would also help (Empress blessing =24 ATk), I have one in the making but currently halted because of this dillema
My skills are also O.K., level 20 OS, Max FB, level 20 HM, Level 20 MW.
I know of a few things to get that may help but I want to know the best use of my mesos to achieve the maximum result, but this is my first time ever doing this sort of thing so please help me out.
And btw I hope you understand my English, it's not my first language.
Thank you for all your help and time, I truly appreciate it.
Sincerely,
From a fellow Basiler and a Mapler.