Yes, it is true that Ramacandra banished Sita later on. Ayodhya is not bound up with any material worlds. Just like Vrindaban is not bound up by any material limitations, as much as Krishna is not bound up by any material limitations. So the kingdom of Ayodhya historically was a tract of land as we see at the present moment, but at that time the king of Ayodhya was the emperor of the world.
Yes, that is very nice, your statement that "I am offering special flowers and prayers to Lord Jagannatha every morning because I know He is liberal to crippled and mistake-making devotees of His Lotus Feet." If we are always afraid of our mistakes, Krishna will save us from all such misgivings and even imperceptibly we commit some mistake, He will forgive us. But we should be always very careful not to commit mistakes.
You are trying your best at that center, and Krishna will help you certainly. I am very glad to see that you are not disappointed. This is a good sign. One should work with courage and patience, and certainly Krishna will be pleased. For the time being you have four or five devotees there, so you try to maintain them there, so that you can carry on your program. Hoping you are all well.
Your ever well-wisher,
A.C. Bhaktivedanta Swami
N. B. In the near future if I get even Canadian Permanent Visa, I shall go at least once quarterly to your place & try to enlighten people there in Krishna Consciousness. Please offer my blessings to Jadurani, __ & __.