You have two Heavy armors right off the bat, that's alot better than I did starting out xD I relied on an iron heavy armor to make up for the gap until I somehow got lucky and pulled gellius with one pull.

I would look into getting a third or fourth healer for niche maps that really need thsoe many healers but it might not be an issue because you got aisha super early on. Cuz i remember being unable to beat some story maps until I fielded a third or fourth healer to keep my units alive.