I already answered about anemones in the other thread and I think that one is the only one that could be a bit problematic.
I'd suggest that the iris should be planted soon as they could be a bit susceptible to drying out, at least this have been my experience with some cultivars. They also will need regular dividing as iris 'Harmony' tend to split up into many small bulbs. A really lovely bulb, but might need some extra care to have reliably bloom in the following years. If you like this type of iris, also look at 'Katharine Hodgkin as it tend to split more into flowering size bulbs so wont need as frequent replanting:
The tulips on the other hand like to be planted late. The ideal time is when the soil cools down to around 10℃/ 50℉. Late planting can help with fungal problems and rots. They like a dry summer rest so depending on climate they might benefit from annual digging in summer once the foliage have completely dried and the skin on the bulbs have turned brown. A few bulb baskets can make this a considerably easier task.
Happy Planting!
