4-6pm starting is a bit early. Do you have the days figured out though? 4-6pm is 5-7pm for me and i dont get off work til 7pm except for mondays. Mondays I get off at 4 unless I have to work overtime. Midnight isnt terrible but I may cut it short on some nights depending on how tired I am or what the next day is.
Ulduar actually isnt that tough, hard modes depending on how many healers/tanks you have. I remember clearing seige to auriaya (normal modes, 10m) with a half dumb group.
I'll have to see some streams or videos of the kills first. I may want to just get some naxx/ulduar progression before I steamroll over past raids first though. I'm interested if the raiding takes off to 25m but ofc I wont leave anomalous.
Let us know when you have the streams up, I may want to bring an ele shaman, spriest, or prot warrior. I might do holy priest but I hate resto shaman & I cant dps on a warrior for shit. Honestly if you ask me to do fury you might as well not even heal me through encounters is how bad I am at fury/arms. I leveled from 40-80 with just prot in both dungeons and questing. Fury is fun...but you guys sound like you want the 110% performance from someone and I just cant give that with dps warrior. Def with spriest or ele shaman I can though...plus I get to play my sexy tauren priest