I would go with Conquest because of the male and male marriage, but its really hard, and like Maelawni, I had trouble with Awakening on normal, with units getting revived. ;-;
I read your earlier posts so I hope this doesn't seem too random lol.
But you said you would rather play the earlier games than finish Awakening or play Fates?
Man...idk, the earlier games are even more difficult. o_o;
I had a GBA emulator on my phone and I can't remember which one I played, but my units died and since they obviously don't/can't come back, you're at a huge disadvantage the rest of the game if you don't reset, unless you're really THAT super skilled and can continue with less and less units to play w/ lol.
I remember getting the "game over" screen a lot, although it could just be my imagination/false memory haha.
But yeah, I'm surprised you didn't finish Awakening. It was difficult for me but I still managed to finish it because I really wanted to know/see how the plot was gonna unfold.