The normal time between planting lily bulbs to flowering is 10 weeks. So if bulbs were planted at the end of July, then you would expect flowering from mid October.
I assume that 2 feet is the flowering height for the variety you bought.
I'd have thought they have a good chance of blooming. Lilies don't flower for very long once they open.
A conservatory is a good place to keep pots of lilies. But be careful to avoid letting the pollen drop onto funishings or clothes. It will stain and is difficult to remove.