Sol Swordfaire/Bowfaire/Pass(always pass if sniper) Galeforce Pavise Tomebreaker/Anathema/Limitbreak
Alternatively you can run Luna+Lifetaker since sometimes you'll only get Sol activation on your turn but 50+ Skill means Sol will be activating alot. You dont have Sol so you can go with Luna+Pass+Lifetaker+Galeforce+Pavise
I have the same noire and am reluctant to put her into sorcerer since she doesn't have armsthrift. Bride would fit her perfectly-great magic for staff use (physic/fortify) and still has access to bows with a bonus of spears
I don't think i'll reclass back to bride, so i'll leave her as a Longbow/Brave Bow Sniper... it'd be a waste to not use Tharja's magic modifiers, but an even bigger waste to not use the three best Sniper skills Gaius gives her access to. I never thought of using Pavise though, could maybe make Counter better, but ideally i'd be using the Galeforce turn to get out of enemy range. Ehh, I dunno.
My Stahl!Severa is a Hero class and that's not changing, and my Virion!Inigo is a Hero as well... but him as a Sniper intrigues me as I've always felt he could do something other than Hero. Now I have something to think about!