Wisper

High strength, defense and skill.

Give Zihark and Nolan max support as quickly as possible. I'd ditch Edward for Zihark when he comes. Make sure Leonardo maxes speed, and gets a lot of strength as well. He can actually be a good archer once he gets the Lughadshadhsffsa bow. +5 speed+34 Speed+30 Luck is pretty good evade. Meg is going to be a liability in the endgame. Not worth taking. She won't be doubling enough to make up for her poor strength. Tauroneo is a far superior marshall if you want to use one and consider him part of the dawn brigade. Fiona is not worth using for several, several reasons. Volug is a monster if you can raise him. BEXP for Str+Def though.

Nolan because of his facial hair. Chicks dig facial hair.

While it is very possible to kill Naes considering you'll give Ike all the BEXP after chapter 17, you could just run past him and kill the boss. Naes wasn't damaging my Ike too much, and Ike was evading everything else on the map anyway.

Rutger comes earlier with better bases and growths that are superior to Fir's except in 20% in luck and only 5% in speed. Not to mention, Fir is way underleveled when you recruit her and it's usually better to spend time babying other units when you have a nearly identical myrmidon that came earlier.

Lugh. He comes at a time when you'll really need help killing generals, and he needs to babied the least of all of them. Lilina is fine, just doesn't double a lot and needs to be babied. By the time Hugh comes, Lugh or Lilina should have far surpassed him.

I've done it before. The only challenging part is in the beginning when Ike can't one round anything. After he starts gaining levels it isn't that hard. I actually had him take down Naesela. Heres a tip, Wrath+resolve>aether.

The dragons can pretty much two shot any of your guys, and usually one shot. It is very hard. I ended up giving Wrath and Resolve to the Lion King guy and I had him almost take care of the dragons that came down from the northwest and northeast while I split my army in two and had them take care of the reinforcments that kept coming from the southern sides. The reinforcments stopped coming after turn 15, so then I slowly killed all the dragons near Dheg. I just had Kurth and Ena kill him so I wouldn't risk a counter attack. It takes a LOOOONG time, but it's possible. After this, the endgame is very easy.