First off, I don't see money as a problem in Conquest largely because I purchased Ghostly Gold and for EXP I brought Boo Camp. While others may not have these two specific DLCs, I used it for reclass on Conquest, Revelations, and Birthright. I actually see people's point with Padalin class, so no worries there, but on Revelations, I somehow leveled her up 3 levels on hard Black Flames, and promoted her to a Great Knight, which changed her from a "Ow, physical weapons hurt, I can't hurt them either" to a "Come at me bro" unit. I say to let her get Armored Blow, Defender(if early game. If post, Aegis.) guaranteed. Then, later, Vengance, and maybe Bowbreaker, if Conquest and battling Takumi/Setsuna/Reina/random snipers. Lifetaker is actually pretty good with Galeforce, and supporting with Felicia/Jakob gives her Tomebreaker when she's a Great Knight, with higher Def then Res. She might need Swordbreaker because she hasn't been trained in Axes yet, but Aether won't activate unless you try really hard to make her a Wifi worthy unit, which isn't common for Peri. Taker skills also resonate really well with her Galeforce and Bloodthirst. It depends on your strategy what to do with Peri. Of course, I will get criticized for every skill up here by a heckler, but this whole paragraph is my opinion on her skills. As for her class, I used Great Knight because she needed the extra Def and and her Str growth was massive. (75%, I believe?) Padalin Peris will do that for her stats being Res balance, but I didn't do that. A Sorcerer Peri is only for the skills, honestly. A Dark Knight might work, If you manage to find her Mag somewhere. I think a physical class with balanced Def/Res, like Basara, perhaps? I don't really know her classes well outside main class and heart seal.