One of the players is moderately experienced at 4e, but the other players are all new to it, though they've got the want.
What adventures are out there that suit my needs, and what level should I start at?
Additionally, should I restrict classes/races/feats to reduce complexity? It would make me feel more comfortable as a DM, but I know that some people are very much against that.
Are there other considerations I should take? I'm a fairly experienced DM, but so far have only DMed with experienced players.