What time are we thinking

http://www.reddit.com/r/DestinyTheGame/comments/2ov6xm/crotas_end_all_phases_guide_and_howto/

The brief overview of Crota's End that I read recommends we have at least a single dude at lvl31 (not absolutely necessary), and that we have weapon load outs comprised of [b]ARC[/b] and [b]FIRE[/b] effect weapons.