Most (all?) of the normal trials/dungeons/raids are designed to be done with an ilvl close to the minimum ilvl.
It should be quite doable with a set of decent players, but it will not be a face-roll. Expect a wipe here and there until all mechanics are learned, but nothing too bad.

The Coils of Bahamut raid is another matter though. While it can be done at minimum ilvl, it is hard. Savage difficulty before they started calling things "Savage". You really need to know how to handle the mechanics there, with not much room for error.