Can I get Feat Advice for my Debuffing Sniper Magus?

[JuliusCromwell]

I have a level 10 Eldritch Archer / D20M Dedicated Hero Gesalt Character

Who uses a Custom Sniper Rifle (Don't know that stats yet) but assume RNG will Be At least 120 (I will also have a High Tech Scope that will Increase Rng and a few other Goodies

First is spell Cartridges worth it? Or should I try to use my regular ammo ?

I will be using Bestow Curse (Taking Reach Spell Strike Arcana) (I am also Hex-crafter)
As a main Rebuff but I kinda want some other good Debuffs

I know I need PBS and precise shot but I am not sure what else to take

My character is part of a Law enforcement group called Counter- Force and I'll have a partner who Fights face to face and the idea is for me weaken the foe so my partner can Take them down.

Of course I'll still deal damage but I want to have some good debuffs

Sadly no traits they are replaced by starting occupation

[Scott Wilhelm]

wow, that's a lot to unpack: a d20/Pathfinder Crossover! There are so many things I'd want to do! I wanna play with you!

Could you refresh my memory and link to the gestalt rules system you are using?

Also, can you tell me how certain things are resolved: Like Improved Trip and Sunder in D20 Modern are not the same as they are in Pathfinder. Do both versions exist? Do they count as prerequisites for each other?

[avr]

Archers generally want their feats for shooting. Point blank shot, precise shot, deadly aim are about the minimum for a sniper, and rapid shot is probably wanted too for when you're not sniping. Spell cartridges comes on top of that if you want it (probably not, you want your feats too badly here), and only then can you start thinking about debuffs.

One feat line you could use for ranged debuffs is ranged trip, relentless shot, and maybe martial focus, ace trip on top of those. Ranged disarm, martial focus, ace disarm is another. Martial focus also works as the prereq for impressive grit if you're playing to high levels.