Technically I've only killed 2-3 bosses in 25 man, and hardly know what I'm doing. I agree 100% that we should be doing Ulduar, but first we need to reliably down Naxx and get these new people geared. The only problem this presents is the influx of opportunists joining our guild looking for runs and assistance but offering none.
ToC farms and badge runs should prolly be the focus to get more of us on the same page, and weed out those who are dedicated from those who are guild hoppers.