I don't know about best time
Any time is better than not being out there
I just see more end of October when they are more visible
Mature bulls are few and far between these days so you just have to glass lots of country
I got a moose across the river from that zone. my suggestion is to start going up as often as you can in July/August and find one you like and track where his range is. make sure you get to know that area well and that you can get it out. They are big! Congrats!!