I feel like an idiot as it took your post to catch the reference he was making.
More Path of Radiance. A few new pre-promotes joined, but I don't think I need to use any of them. Geoffery is probably the best of them (Tauroneo, Bastian, Lucia, Geoffery, and Largo). For awhile I was struggling keeping Reyson alive during the map where Lucia and Bastian join, but then I had an epiphany: skip using Reyson for this chapter. Worked like a charm.
Yeah, of the four Geoffery is the most useful due to Paragon, a Brave Lance, and being a Paladin. Also you forgot to mention Haar and Ranulf in that recruitment spree.
Anyways, unfortunately for Haar, this is FE9 and not FE10 so you don't get to see why he has his fan nickname Captain Haar Solo yet, in this game he's the other Wyvern Lord but unlike Jill, he's slow as dirt at base, but he does come with Guard, a Brave Axe, and a flying mount which are always good, but this is pretty much the late game here so he doesn't really have a lot of time to shine (though he makes up for it in spades in FE10; seriously, had his final Spd cap in that game been even a point or two higher, he'd be rivaling Seth and Sigrud for best character in the series; but then again, what do you expect when you give a guy an overpowered class, remove virtually every weakness balancing said class, give the guy fantastic stats and growths in said class, and then give him most of the game to stomp around in where availability is king, including an endgame stage to practically solo). Ranulf is the other non-Ulki/Reyson/Dragon/Laguz General that's worth using in the game, namely because he's Lethe+ and because he can Support with Ike for a hefty +7.5 Avoid per level, of course if Lethe has been turning out you might as well keep using her instead. Bastian is practically a joke character in this game since he's a Wind Sage with Knives, mediocre bases (seriously, Calill has him beat in virtually every important stat at base save for Str, which he doesn't need because lolwindmagic, and Def), and a really crappy skill (seriously? Corrode? a skill that depletes weapon uses that actually hit the guy? weapon uses you'd rather have for yourself if it drops or you can steal it? and all this if you even proc the skill? lolololol, it's not like it'd even work on the weapons you'd actually want to corrode), his one redeeming feature is that he's the only unit in the game that can Support Volke (and its not even worth it). Lucia is the last of the game's Swordmasters, but whereas the other three potential SMs correlate to Swordfighters from FE4 (Mia to Larcei, Zihark to Ulster, Stefan to Shanan), Lucia correlates more to FE7's Karla rather than the remaining FE4 SM Ayra (maybe more like FE4's Roddelbad) as outside of Luck, Stefan has her bases beat on every level with four extra levels of growing room and nine extra chapters of availability, and of the four, her base skill is the lame Nihil substitute Parity (Nihil, accept no substitutes) which defeats the one thing she has going for her, her Earth Affinity (she also has lolfemaleswordmastercaps but these don't matter to her at all due to A) having bases so low and a default level so high that not even her good growth rates can hope to reach them and B) gets royally screwed over for availability in FE10 (she has one chapter in which she's a Jagan, the two Part four Crimea chapters where the crutches start showing up (including Stefan again), and the finale which everyone wants a part of) which makes her dead last in terms of people needing their transfer bonus (hell even Sothe has more of a reason to go for a transfer bonus than her, and he gets almost nothing for his)). Geoffery who, as I mentioned before, has decent bases, good growths, a mount, Paragon, and a free Brave Lance, no Axes though. And finally Largo, who's the second to last Beorc who joins in the game (and fourth from last in general) and is basically a Boyd substitute if you like Axe men with high Crit rates and high Str to wreck face with, moreover, if he hits level 20 he can pass on his transfer bonuses (i.e. HP, Str, Skl, and maybe Spd) to Calill who'll appreciate the bonuses as she can focus more on hitting her Mag cap instead (because he's the only FE9 character to straight up bow out of playability in FE10).
Anyways, now is the time to focus on making sure Ike is well leveled for the next bit. He'll want to have 50+ HP, 26 Skl, to have hit his Str, Spd, and Def caps, and to have a sister who can hold her own against generics and can ORKO Bishops by the end of Chapter 27. Don't be afraid to Angelic Robe him either since the more HP he has for that part, the better (and Miracle plus all your Ashera Icons might not hurt either since it might help (emphasis on 'might') if Luna rears its ugly head and nobody's hitting their Luck cap anyways).