Quite a variety of seeds you got there, they will not be finishing at the same time. The sativas could go up to 14 weeks...
There is a lot of bogus information floating around here about trichs, you harvest when you have ambers. You need to see amber trichs to know that you are finishing up, how much amber is up to you. Clear is too early, and cloudy is no indicator as you can have cloudy trichs for weeks and weeks before maturity.
Use the trichs as a guide in conjunction with the other key indicators, which are: % brown hairs, the calendar, swollen calyxs, and recessed hairs.