i think the rule for the guild leader is waiting for a full 3 days, but id try again at 2 just to be sure.
yes ALL members of the party must not have been in a guild for at least 2 days (except maby that leader thing) and none of them can be a current member of a guild. once you have that down itll run you 3mil to finalize the creation (could start a collection 1 mil from each starting member). then yea you should then have a guild... enjoy.