One solution is to buy some of the components. By the time your struggling to upkeep food for everyone's chocobo, its probably because you have quite a few members overall in your FC.
If you have that many people interested in chocobos organize a farming party and buy the components to make the broom. Instead of dedicating one entire plot to this you now have 3 plots for food production. A full party farming for 1 broom should be fairly easy if done properly.
Also, look around the neighborhood and socialize with some of the smaller FC's especially ones which own medium or large lots. Ask them if they would offer you produce for money or trade goods. A lot of times, larger FCs, tend to have things small FCs don't. My FC, which owns a large lot and has only 9 members, for example has never set foot in the coils so we readily trade our produce for special furniture items or rarer things that larger FCs accumulate and call trash.
As for the conveying message, I think you should just ask for a calendar. Its much easier to access and members can see for the next 28-31 days what is going to happen.
