Yeah when I was 29 I got a party of 6 29's and we went through it without too many wipes, like others said just make sure you don't try to be a hero- a few sacrifices at the conflux is better than guardians down. Also make sure you have at least one raid weapon maxed for oracles. If you're on Xbox 360 and you want a 30 to help I would be glad to help.
Myself and my buddy were the only 30's in our group when we beat Atheon over the weekend. These were people we picked up off the lfg site so it's not like we play together and we still were able to pull it together and mess up the boss. Skill, communication and teamwork will always ALWAYS be better than that single digit.