As far as Sankirtana is concerned, that should be continued in all circumstances. Chanting of Hare Krishna, Sankirtana is our life and soul. Side by side, if possible, then you can attempt for the ISKCON restaurant and Krishna Prasadam distribution, but this I think is secondary.
Letter to Nathan baruch 1968.
Our first important business is to hold Sankirtana as many times as possible. The next important business is publication work.
Letter to Krishna Dasa – Los Angeles 28 July, 1969.
We are not much concerned about the temple because temple worship is not primary factor in this age. Primary factor is Sankirtana. But sometimes we want a center where people may gather and see, so a temple is required secondarily.
Letter to Mukunda – New Vrindaban 27 May, 1969.
Sankirtana will always be appreciated, because it is the special blessings of Lord Caitanya Mahaprabhu on the people of this fallen age of Kali.
Letter to Achyutananda, 1975.
Sankirtana means chanting of the holy name of the Lord.
Purport on Srimad Bhagavatam 7.15.7
Harinama sankirtana means blending of the loving feelings of many devotees chanting in harmony. When devotees get together and chant Krsna’s holy names full of humility, attachment and love, everyone in that sankirtana party can absorb the various bhavas of one another. This is why sankirtana is so powerful.