AC4 Templar Armor for Edward Kenway. Templar Hunt for the keys. Assassin...

I am Edward Kenway and I am wearing Stealthy Outfit. But I feel unprotected in it, especially from the bottom... And I even do not have shoes! I need better protection! I need to get Templar Armor!
Templar Armor is locked in my new house (it was a mansion of the Templar Du Casse once... Now it's mine!) To unlock it I used key I got from Du Casse, but I still need to find the remaining 4 keys. Those are side missions and I should locate the start of each mission on the map.