I'm reaching a point in my new vault where many of my people are level 25-26 and everyone is armed at minimum with 3-5 damage pistol. Most have better weapons than that. I'm wondering when would be an appropriate time to upgrade my rooms. Do these numbers sound good:
T2 = All level 25 + and armed
T3 = all level 50 + and armed with 12 damage +
I don't want to end up in the same situation as last time where mole rats came through and wiped the floor with me repeatedly.