I'm sorry if it may sound very discouraging but if you want to actually do anything with your GS at the higher levels and would want to kill some lower end MvP's (which isn't alot anyway), I would really suggest that you reset your build to Vit-Dex-Int one and main a Pistol/Shotgun. My reasoning behind this is simply because Gunslingers have very few weapon options and pistols/gatlings, weapons intended for Agi attacking, don't scale very well into the game, especially not if you're auto-attacking. If your justifying getting Agi for flee, notice that your Flee is still gimped compared to most other classes, something imo should have been fixed with renewal but wasn't.
Something that Gunslingers have that most other classes don't is that they have very good skill modifiers. When I see a GS is Agi-pistol type, I either think a.) he's heavily funded or b.)he doesn't know what he's doing. (Commonly the latter) Better work towards the class' strength, right? The Vit-Dex-Int build is a pretty straightforward one:
Vit 79~94 (stop at multiples of 5, take in mind your job bonus)
Dex 90~99
Int 28~52 (just go for multiples of 6 or dump any remaining points)
As contrary as it sounds, I do not recommend maxing out any stat, not even Dex. We don't have the bonus of 100 more stat points to allocate like trans do so we'll have to maximize the usage of the three stats. Try to aim for a flat 120 Dex with bonuses, gears, Blessing, etc. Oh and please, do not put any Str, save up and use Max Weights. It kills me a little inside whenever I see GS's still adding Str for weight capacity.
As for the skills, Desperado and THS is a given, as is Full Blast. I have no problem with you getting Spread Shot as it's a less dangerous alternative to Desperado but if you feel you're already comfortable enough with mob diving with Desp, do skip it. As for the Coin skills, most of them are pretty situational and the only ones I've ever gotten use of is Increase Accuracy(arguable the most useful), Last Stand(heavy pre-reqs!) and Gunslinger Panic (situational at best). As for Coin Flip itself, get level 5 or get none at all, it's just not practical to stand in one corner trrying to get coins with any level lower than 5. Every coin also adds a weapon mastery-like damage, +3 per coin I believe, nothing too amazing. Cracker sucks, Magical Bullet sucks, Gunslinger Mine sucks, Coin Fling sucks, Bull's Eye sucks(unless killing Ninjas is your cup of tea). For PvM, I'd suggest the following:
Snake Eyes 10 (pre-req for Increase Accuracy, in actuality, level 7 is enough to reach the whole screen)
Trigger Happy Shot 10 (Bread and butter)
Full Blast 10 (Bread and butter)
Desperado 10 (Bread and butter)
Coin Flip 5 (Pre-req for Increase Accuracy)
Increase Accuracy 1 (Simply lack of a better option like Improve Concentration)
Chain Action 3 (Pre-req)
Single Action 5 (Pre-req)
Spread Attack 10 (Ranged AoE)
Crowd Conrol Shot 3 (Pre-req)
Extra 2 points - go crazy
Yeah, I know big wall of text, whatever. Tl;Dr - Ditch Dex/Agi build, go Vit-Dex-Int, main a Pistol/Shotgun, max THS, Despe, FB, nothing else matters. If it sounds too hard for you, might I suggest going Hunter route and maining a Ranger instead? I hear Ranger academy is still booming.
EDIT: Oh and if you're having SP problems might want to look into buying a Ulle's Cap[1] + Odin's Blessing, Blue Acidus card, Earth deleter card, or a Rideword hat.
Edited by BIuewind, 22 February 2013 - 05:30 AM.