ARCADIA CAN GO DIE IN A HOLE (Seriously, Arcadia is the only map I EVER bring Astol, Chad and Cath to, not counting Real Enemy since that's when you recruit Cath and I need to bring Chad to get Ray if I'm not using Lugh, also Arcadia is the reason I use Tate and Miledy as opposed to using just Miledy like how I would normally in FE7 use just Florina or in FE8 just use Tana)
For the most part, Nino is a bigger concern than Jaffar, at least until Jaffar runs out of his Killing Edge, but by that time he's killed most of the enemies around him and you have your units up there. All but your main lord (and thieves) should be classed up by now, so you should be able to rush a bit, especially with units like Oswin, Sain, Kent and Hector (if this is Eliwood's story and you decided to be smart and class Hector up before Lyn)
I like Battle Before Dawn as fog maps go
I like Battle Before Dawn as fog maps go, honestly the thing with that is that there's so much to do, all in 15 turns, there are 4 chests to get, there are 2 characters to talk to and there's one character to defend, all well being hidden by fog, meaning that you can't see what's coming next, but if your units are high enough level at this point, you should be able to rush, which you kind of have to do
I like Sands of Time and Talons Alight, and as fog maps go, there's only one in FE7 that's better than Battle Before Dawn for me (A Glimpse in Time)
Strategy for that map, deal with Halberd, have Seth rush boss
And a turn limit for the Gaiden chapter